Well. I don’t expect doctors to bring their own scalpel, construction workers their own hammers, firefighters their own hoses.
If you want to employ me, please provide me with the tools to do the job properly. An ergonomic keyboard, mouse, chair and desk are a given. A nice display is a bonus.
Especially when it comes to ergonomics I don’t understand employers, an engineer going on leave for a week because of RSI / back pains, is way more expensive.