I certainly wouldn't recommend it for most situations, especially something like a corporate environment where most people have problems with basic E-Mail workflows like inline quoting and preserving In-Reply-To headers.

It's more suited for free software projects like Linux & Git where the participants don't want to be locked out of all their historical discussions just because some company does badly in the stock market, as opposed to being 100% archived in hundreds of places via an open protocol, and trivial to migrate somewhere else.

I'm just saying the problems you had with it seem to come down to a completely dysfunctional corporate culture, not patches over E-Mail.

Sure if you're working with such monumental assholes that they're just going to passive-aggressively and conveniently discard whatever you tell them over E-Mail / IM / at the water cooler that's pertinent to their work area and need to essentially CC their manager on all correspondence, and are using PRs as a way to do that.

Then sure, then an E-Mail-based workflow probably isn't for you, although you could use git-format-patch to CC both your and their manager on every patch you send to achieve similar results.