One of the 5 keyboards on your list you used all the way through university, and there's only 2 keyboards after. This feels far from an unhealthy obsession to me.
And those look like default keycaps. If someone hasn't developed strong opinions on materials and double-shot markings, they're still at the "only on weekends when I've been drinking" stage.
I have to admit, I was expecting something different when I saw the title.
Just one of my hand-build, custom switch, aluminium-case, custom-firmware,"artisan" keycap, mechanical keyboards would buy all of those on OPs list, probably twice over.
It's good that OP is keeping a lid on their keyboard buying habits (as with anything), but realistically, OP isn't even in the same _universe_ as the people with the _real_ unhealthy keyboard habits.
There are/were people on the mechanical keyboard sub-reddit whose keyboard collections reach into the tens of thousands of dollars.