I am going to go ahead and suggest that Windows 10 is never a requirement. Yes, it may be enforced by your specific department. Yes, the decision makers can be incompetent idiots and force people to use it due to their lack of knowledge of alternatives. However when you look into it, Windows 10 is never a requirement any more than fluffy wallpaper or a toilet brush with a little bear face on the handle.Windows 10 is a requirement
Disappointingly I understand the above statement means very little when you are stuck with it. I have a couple of laptops provided by my employers which are still in the box. I just take my good ol' ratty X240 ThinkPad into work instead until their laptops are supported. The trick is to not be attracted to new shiny equipment.
If you need to test on Windows, then VMs are very useful. Especially if you work in the tech sector. Much work is using VMs anyway so running a VM on FreeBSD vs running a VM on Windows make so very little difference.