That's the way it is at Google and the FAANGs in general and companies that try to ape Google's practice but that's far from most companies. This is very much a selection bias. "Most companies" don't have the budget for the roles you've listed or aren't middle-manager heavy organizationally like Google is. Most of my career I've been my own project manager.
At least in my 20 years of experience, the most effective companies have developers (sometimes in those roles you listed) involved in the requirements gathering or at least work planning phases. Does anyone really enjoy just being a cog in the "feature factory" you described? I doubt it.
Given the number of broken Google SDKs or Cloud features I have to deal with in my day to day though (and game of whackamole that we have to play with them), this seems accurate.
At least in my 20 years of experience, the most effective companies have developers (sometimes in those roles you listed) involved in the requirements gathering or at least work planning phases. Does anyone really enjoy just being a cog in the "feature factory" you described? I doubt it.
Given the number of broken Google SDKs or Cloud features I have to deal with in my day to day though (and game of whackamole that we have to play with them), this seems accurate.