Unless you work in Alphabet's marketing department, then no GCP isn't the best one. The most reliable cloud has always been AWS by a wide margin. The exec in charge of GCP has had to apologize in public on multiple occasions for GCP's reliability problems. Sounds like they have fixed them by now (years later) but that doesn't make up the disaster that was BigQuery.

Also, GCP is more focused on smaller customers so perhaps that's the part that works for you. AWS can be a bit daunting. But AWS actually versions their APIs and publishes roadmaps and timelines for when APIs get added and retired and what you should use instead. GCP will just cancel things on short notice with no replacement.