Why was my thread deleted in Psychology?

I started a thread in the "psychology" subforum last night, and after getting zero replies, I came back today only to find it's been deleted. What gives? Moderators, I’d appreciate an explanation

First off, my bad—I completely missed this thread, otherwise I would've jumped in sooner.

Regarding the subject at hand: over in the psychology subforum, you started a discussion claiming that mental illnesses are just "social constructs." Do you honestly not see why that’s such a massive problem?