Poly caps in gunpla

Why people don’t like poly caps in gunpla? Is there third party brands (such as wave, Kotobukiya) which sells poly caps that can be used for the replacement?

I believe its because the breakdown and become loose


Yes, a lot of my old models that have polycaps can’t even stand anymore due to the degradation of the polycaps.

Those are the pieces that come on the sheet PC? You pretty much have to take the kit apart just to be able to replace them if you were too.