It's probably just a template or part of a template used by multiple lawyers. Many websites have similar terms. See below for examples.
https://www.apple.com/legal/internet-services/itunes/us/terms.html"Apple reserves the right at any time to modify this Agreement and to add new or additional terms or conditions on your use of the Services. Such modifications and additional terms and conditions will be effective immediately and incorporated into this Agreement. Your continued use of the Services will be deemed acceptance thereof."
https://www.airbnb.ca/terms"Airbnb reserves the right, at its sole discretion, to modify the Site, Application or Services or to modify these Terms, including the Service Fees, at any time and without prior notice. If we modify these Terms, we will post the modification on the Site or via the Application and/or provide you notice of the modification by email. We will also update the “Last Updated” date at the top of these Terms. Changes to the Terms will be effective at the time of posting. Your continued access or use of the Site, Application or Services will constitute acceptance of the modified Terms."
https://www.hillaryclinton.com/page/terms-of-service/"We reserve the right to change or modify any of the terms and conditions contained in the Terms or any policy or guideline of the Sites, at any time and in our sole discretion. Any changes or modification will be effective immediately upon posting of the revisions on the Sites, and you waive any right you may have to receive specific notice of such changes or modifications."
https://www.donaldjtrump.com/terms-of-service/"We reserve the right to change or modify any of the terms and conditions contained in the Terms of Service or any policy or guideline of the Sites at any time and in our sole discretion. Any changes or modification to the terms and conditions will take effect immediately upon posting of the revisions on the Sites."
http://www.sae.edu/terms-and-conditions"we may modify this agreement from time to time and notice of revisions to this agreement will be posted here. Continued use of the service by you will constitute your acceptance of any changes or revisions to the agreement."
https://www.reverbnation.com/termsandconditions"WE RESERVE THE SOLE RIGHT AT ANY TIME TO MODIFY, DISCONTINUE, OR TERMINATE ANY SERVICE OR THE SITE, OR CHANGE, ADD, OR DELETE PORTIONS OF THESE TERMS AND CONDITIONS WITHOUT NOTICE. WE WILL POST CHANGES TO THESE TERMS AND CONDITIONS, IF ANY, TO THE SITE. IT IS YOUR RESPONSIBILITY TO CHECK THE SITE PERIODICALLY FOR CHANGES. YOUR CONTINUED USE OF THE SITE AND SERVICES AFTER ANY CHANGES CONSTITUTES YOUR ACCEPTANCE OF THE REVISED TERMS AND CONDITIONS."
https://www.musicxray.com/terms-of-serviceMusic Xray reserves the right to change or modify any of the terms and conditions contained in the Client’s Agreement, the General Agreement, and the Forms at any time at its sole discretion, and to determine whether and when any such changes apply to both existing or future customers. Any modifications will be effective upon posting the revisions to the terms and conditions posted via Music Xray’s corporate website.
http://www.broadjam.com/legal/user.php#id1.18You agree that, at any time, Broadjam may revise, change or modify any terms and conditions of this Agreement and/or any aspect of any Service, without notice to you. You can review the most current version of this Agreement at any time at:
http://www.broadjam.com.http://ourstage.com/about/termsOurStage shall have the right at any time to (a) change the terms of these Terms, (b) change the Site, including eliminating or discontinuing any content or feature of the Site, restricting the hours of availability, or limiting the amount of use permitted, or (c) change any fees or charges for use of the Site, including instituting new or increased fees or charges for the use of the Site or any other Site-related services or any feature thereof. Such changes, modifications, additions, or deletions shall be effective immediately upon notice thereof, which may be given by means including, but not limited to, posting on the Site, or by electronic mail, or by conventional mail.
http://www.soundclick.com/docs/legal.cfm?site=termsModification of Terms and Conditions: From time to time SoundClick may modify these Terms and Conditions in its sole discretion. When such modification is made, SoundClick will post a revised version of these Terms and Conditions on the Website. Modifications will be effective when they are posted. SoundClick is not required to provide you with notification that any such modification has been made. It is your responsibility to review these Terms and Conditions from time to time to be aware of any such modifications. Each time you log on to the Website, you will be deemed to have accepted any such modifications.