I just wrote a really long post and then deleted it again, so I’m going to try something shorter…
It’s fine to buy gear if it makes you happy and you can afford it. It absolutely WILL NOT make you a better musician/producer. If you’ve spent the time learning to produce or do sound design then you’ll likely be able to take a single synth and make entire albums with it. We’ve all seen the YT videos of “professional” producers doing such things, if that’s your cup of tea.
If you just like to have fun with music gear then go ahead and buy whatever you like, just don’t expect to suddenly have an epiphany when you get that “one more” piece of gear. I am one of many, may people here who have bought and sold tons of VST synths, DAWs, bits of hardware etc. It’s a fool errand if the goal is to actually be a better music producer. If, on the other hand, you just enjoy playing with music gear, then that’s a good enough reason and you don’t need anyone’s approval (except perhaps your partner/wife/husband/etc if you’re spending money meant for something else).
I’m going to go out on a limb here and propose that if your end goal is to actually produce “finished” music and not just mess around then most (not all) people are better off with less gear, not more. I have zero judgment on people with GAS (I’m one of them, at least some of the time) but it’s probably counter-productive if you’re actually trying to get something done.
I believe the saying is “option paralysis”. It’s real!
OK, that was still quite a long post. Sorry.