At least you might be way more their target group than me :) I'm not a lone wolf developer (currently), but sharing terminal sessions really never happens. Collaboration is done via chat/video and if something is shared on the screen, it's the IDE. Ah, and with git of course. Maybe that changes with a more dev ops oriented role, which is definitely not mine.

> Very often, machines I ssh into are missing a lot of my custom config and it’s a pain to re-adapt in the thick of it.

I - and I get the impression that's true for many developers - learned early to minimize the custom config. It's bash, maybe with tmux (or likely just screen) and some sensible defaults, and that's it.

> IME it super painful to build a shell config that works across Mac/Win/Linux that reliably does word selection, jumping, home/end, etc.

But why would one need that? Is your environment that random?