> So... do you refuse to use the laptop supplied by your employer?

For things other than work for my employer? Yes.

And work stuff doesn't touch my personal equipment, with the exception that I can connect to the company VPN from my personal laptop to remote to a work machine if I need to do DayJob work remote in an emergency when I don't have the company laptop with me.

> It does MITM between you and the HTTPS websites you browse.

My employer doesn't. Many don't.

Of course many do, but that is them controlling what happens on their equipment and they are usually up front about it. This is quite different to an ISP, shady WiFi operator, or other adversarial network node, inspecting and perhaps modifying what I look at behind my back.