Nah, it's been hosted by Microsoft for years, on Github for a decade, without as much as a takedown notice, 161k stars now, they don't mind.

https://github.com/massgravel/Microsoft-Activation-Scripts

If they wanted it removed from GitHub they would have done so.

I'd feel bad only if there were a legitimate way to acquire the LTSC for home use

If you're a midsize business with revenue, theoretically one of their enforcement partners may take a run at you, but this is not a thing with home users (or even most small business abuse).

Hot take but legality is completely irrelevant for home use