@mijostyn speaks about the problem with lateral compliance which I’m sure is right as it makes sense - but it puzzles me that Kuzma released a silly money arm which is unusually heavy and apparently it throws the whole compliance thing out of the window -
I'm not a fan of super heavy arms, but I can tell you that I ran a high compliance Shure V15vxmr in a linear tracker ( Eminent Technology ET2 modded ) for 10 years with the stabiliser brush removed and without changing the stylus for those 10 years.
I sold the Shure for the full original price after 10 years use - the cantilever was still dead straight and stylus wear negligible.
I've seen more bent cantilevers from incorrect anti skate than I have ever seen on Linear trackers properly set up.
Not all Linear trackers are as heavy as claimed by some - the ET2 has a lower horizontal effective mass than the FR's, Dynavector and many others highly regarded arms of today.