No issues whatsoever with integral strikers. Ive owned a lot of them. Ive seen a lot of them too. In my experience, its pretty rare to have a striker fail. If it does fail....its a relatively easy fix. Ive also owned quite a few guns with disc set strikers...Ive NEVER had to change one. The only thing I have ever had to do was remove a striker on a AyA #2 and reshape it because it was causing the gun to hang up after being fired. Easy.
So, history and analytics being what they are....Im good with integral strikers or bushed...makes zero difference to me.