> because you could've just had your small team of front end developers talk to your small team of back end developers to create exactly the optimized endpoints they needed to solve the problem

What you are describing is called BFF I guess.

And apparently it's already out of date so let's again split BFFs into smaller parts.

https://martinfowler.com/articles/micro-frontends.html#Backe...

I am not against services, it's organizational motivated "micro" services I am very afraid of.