OMG no. Why would I switch? I've got 9 of them and my son's have 7 more. Those 16 and several sold/traded off over the last 15+ years through current ran/run great. They are everything I could ask them to be.
I sympathize with the disaffected and wish them luck in their journeys. But I have no reason to weigh the negative reports heavier than my own experience shooting at an 8-10K round annual clip. The shooting friends around me here have similar experience. One rotates back and forth to AFG on training gigs certifying security forces. His operation has over 1000 G19s in service for years shooting year round in training and quals with zero PM/cleaning until the rare bobble then it's back up and running with a spring.
Whatever.