Maybe I’m in the minority here, but to me I’d consider throwing a god-level NPC at your players explicitly to punish them for their behavior to fall pretty squarely under “screwing them over”.

yeah obviously that's how you see it because you only see things one way, throughout this entire convo.

I get that.

the rest of us playing ttrpg's don't see it as 'oh they've sent punishment' - no, the dm is tailoring the world to react to the player's shenanigans. should the DM just drop everything and cater to whatever whims the PCs devise?

you really don't understand any of this shit.