We do not block Tor - in fact, we recently launched our own self-hosted Tor node[1].
We have had problems with GCP blocking VPN and Tor traffic (mostly the former) when we have made zero configuration to do so. It's quite frustrating, and we have been working with their support to improve this generally.
Haven't heard anyone having issues with Tor since we set up the node though :) If you give it a try, let us know how it works for you.
[1] https://help.kagi.com/kagi/getting-started/accessing-via-tor...