To answer your first question : no, there's absolutely no wat to determine if a version of Office is cracked or not by looking at the files made with said version. Tho Microsoft can see if a cracked version sends telemetry but they don't care about it. You can use it freely.
And honestly, LibreOffice is 1 to 1 compatible, you just have to install Microsoft's proprietary fonts.
You're talking about "Nazis" so much it looks like you travelled straight from 1942 to now just a few moments ago and do not yet grasp the fact that Bluesky would obviously ban them since it's like a big monolithic Mastodon instance
It's extremly easy to determine if something is "queer friendly" or not, event if you're not a queer yourself. By your flawless logic, I should not be able to discern the presence of racism in a KKK meeting because I'm not black lol.
I think of it a bit like Fast and furious Tokyo Drift which is a spin-off but is consideresd as Fast 3