I use as much open source as I can (quality is generally better), but there are many line of business applications that don't work well on WoA, let alone Linux (x86 or ARM).

For open source only it works pretty well. I've been using ARM SBCs since 2018 and it's been great.

On desktop Linux/ARM, I am guessing there will be a lot of extra issues; drivers, problems with emulation of Windows games (independent of dGPU issues), limited support opportunities etc.