Not trying to single you out (your statement is totally on point), but generally we need a word for this developer-centric view of Cloud. My kids write javascript and might be considered developers, but they don't have the faintest idea about operating systems, containers, services, or anything non-superficial in the stack let alone IAM, I18N, consensus, etc. Cloud is not any less of an operational model as it is a development platform.
Anyone else have to read "Madame Bovary" in high school? Maybe this focus on developer is a form of provincialism.
Come on: someone smarter than me must have coined this already.
I actually know of some companies that run part of their infrastructure on AWS and part on GCP.
There are companies that help you run "seamlessly" on any cloud provider you want so in theory you can use them to balance your services between cloud provider for cost or performance.