I tried a similar argument using first-class iterables and/or channels to try to isolate state in a big project while still at a very, very major web company.

I tried a similar argument using first-class iterables and/or channels to try to isolate state in a big project while still at a very, very major web company. NOPE. Was on an all FE team. The one BE guy embedded with our team got it, the FE devs just looked at me with blank stares during my presentation.