This is the conflict at the center of running a hosting company - make it easy to signup and you get a lot of new users but also a lot of abuse.

Implement anti-abuse measures and you will hit some loud false positives (this may be the case with GCP here).

I don't envy anybody running a hosting co - the internet is a really ugly place under the surface.

edit: to add - AWS are really good here. Must be the ~30 years of retail fraud and abuse experience.