The guitarist comment relates to G.A.S
(Guitar Acquisition Syndrome), which affects many guitarists. How many guitars do you need = n+1, steel strung, nylon, electric, single cut, double cut, 6,7,12 string etc etc. I think it’s a bit worse than bikes: road, mtb, gravel, touring etc etc… apart from the collectors in both camps of course 😅
Ha! Silly guitarist with your various string choices. As a bassist I have been enlightened and know, that the only true string is flatwound. Thou shalt have no other strings!
As for various types of basses, less is more! One only absolutely needs a J, P, PJ, Stingray H, Stingray HH, a modern dual humbucker, a five string multiscale J and a six string bongo.
Honestly though I'm kinda glad I'm not currently playing metal because I'd have to get a 35"-37" multiscale for that.