AWS being the dominant player means that if they make any silent changes there will be a SO/GitHub issue/HN thread about it. But with GCP without their pricy professional tier support you can feel a bit unsure and lost all the time about your understanding of it.
I don't know about you, but in 48 hours I've usually already built a workaround and moved on to other projects.
Not saying that AWS support is worse or even equal to GCP support, but just commenting that cloud support in general feels pretty useless and an afterthought at best.
And let's not even get started on the horrible, awful UI in AWS console.
I've had this happen multiple times for multiple services and the person's i was able to work with had enough knowledge and access to either see detailed logs and walk me through some undocumented feature or file a bug report by days end.
I'm spoiled in that regard but I've never had non-enterpise support with anything other than the 4 hour sla.
But at the same time I can refer to enterprise-tier support at AWS, which has gone past ticket stage into "regular calls with AWS support engineers to help architect our solution" and certain critical topics ended up ghosted (my first reaction was that support had no idea about the functionality we asked about, later experienced taught me that at best, the AWS documentation lied by omission. At worst it was divorced from reality.)