> I've wondered a few times if other platforms have similar issues and have seen more than a few complaints about EKS.

I can't speak to EKS but we've been running production workloads on GKE for over a year with very good results. There have been a very few really troublesome "growing pains" type issues (an early example: loadbalancer services getting stuck with a pending external IP assignment for days) but Google has been awesome about support, even to the extent of getting Tim Hockin and Brendan Burns on the phone with us at various times to gather information about stuff like the example I gave above. I give them high marks and would recommend the service without hesitation.