They take weeks to respond to anything, they change their minds constantly, you can never trust anything anyone says, their internal communication is a complete disaster, and someone recently told me they outsource a lot of their GCP personnel.
We went back to AWS and had a whole fleet of GPUs up and running within the week.
This is my 3rd extremely bad experience on Google Cloud. My last unicorn startup had several GCP-caused P0 production issues. They would update something internally with no announcement to customers and our production workloads would completely break out of the blue. It would usually take them days to weeks to fix it even with us spending tens of millions with them and calling support constantly. Everyone at our company was baffled at how bad the experience was compared to every other cloud provider.
I would not put anything serious there and I would never partner with GCP again.