I'm in a small business, so I've never used it. RHEL uses ESR though, so I wonder if they'd offer this too.

I mean, annoying for technically competent users, sure, but I'm sure you can also see how forbidding arbitrary extensions is generally a good thing for managed environments, right?

My old employer locked down normal FF, one thing was an allow list of extensions. They did it using the profile settings JSON file in an admin only file, and normal users didn't have admin. Thankfully, UBO and dark reader were both allowed, but still. It was annoying trying to get extensions allowed, as I had to have a "valid business case" for it. And "I want to send gifs to coworkers on teams" was not accepted to get the giphy extension allowed.

Nah you're right. Best to keep you on Chrome instead.

You can do that with standard Firefox.