Not generally. There is a quota service for all modern gcp APIs that handles per region, per user, and per project quotas that internally you just need the right permissions to update for a customer request, no PR required.

It's not as bad as you think, the PRs are written on their own and the engineer in question probably blanket approves all of them every morning while they're checking email (quickly scanning them looking for automated red flags).

A not uncommon flow was:

- google form submission

- creates a PR with the project ID and the requested value as an exception in a file (this requires OWNERS approval, so at a min one eng/pm to approve)

- file would update a DB the next time it's picked up