Hi,This can be true but with proper maintenance it's not a problem. You need to keep the poly bushings greased up. If it gets bound up then the arm can't move laterally and can make the car handle dangerously.
Can someone explain to what's RTA? Also, when u mentioned that the bushing need to be grease, u mean when one is doing the installation or after the installation also must do greasing? Thanks in advance for any input