Can you share that petition?

I am only aware of one circumstance of where North Shore Rescue formally asked for a trail ("Taint" on Grouse) to be removed and it is unrelated to the trails that have been the subject of mass vandalism by mountain bike users. First off, Search and Rescue agencies in British Columbia have a very low understanding of OpenStreetMap and mapping best practices. Second, the North Shore Rescue member that asked for a trail to be removed was a new member of the organization that did not understand the OpenStreetMap tagging scheme or best practices around mapping of trails. Ultimately, in consultation with another user (user "Bookwus") that trail had it's tagging altered to reduce potential for issues.

I should also note that the "Taint" trail is available other services like Strava where the trail is visible in the route builder as user-generated heat, a segment, and public photos.

https://imgur.com/a/A2IvTRn

The "Taint" trail is also available on Outside's TrailForks service.

https://www.trailforks.com/trails/tint/

Finally, the trails that were the subject of deletion in this changset are for the most part fully annotated with tags, such as informal, sac_scale, mtb:scale:imba, trail_visibility, and trailblazed to follow best practices developed by the US Trails Working Group. 