It’s not pointless. Really immediately noticeable, much much less stiction. Small bumps go from being dulled to being completely erased. Think this depends how much bushing rotation there is on your bike though.
THe only arse ache is that you need to get one that fits properly as often the eyelets aren’t perfectly sized on the shock.
(Mine was from Real WOrld Cycles/Enduro and had decent rubber seals which I don;t think the BETD ones do).
Not sure how it could fall to bits TBH. If there’s play it means either it is the wrong size, or it was fitted badly.
I personally think it’s only worthwhile doing if you need to improve small bump performance.
Better off with a polymer eyelet bush TBH
Do they perform better than normal bushings or just last longer?