Why would the halving affect price?

I've been hearing forever that halving's lead to a price jump, but that makes zero sense to me.

People seem so confident in this but I can't think of any reason to believe it will happen again. Sure, it's happened the last 3x but that's a very small sample size, and all while Bitcoin was more or less insignificant.

Yes the volume of new Bitcoin coming online will be smaller, but that amount is insignificant compared to the amount of Bitcoin that trades every day.

Really the only thing I see happening is a ton of minors will go out of business and a bunch of hardware will be sitting idle. Members of the Bitcoin community that work contributing will go broke. I don't see how that helps price or user adoption.

Can someone explain to me why the Bitcoin having might cause a price jump.

(And please don't post any TA or Rainbow charts as those are all nonsense...)