alt Hacker NewsIt's selection bias. There's a huge number of GC language users, but those who experience problems tend to be the ones who comment.
You're right; the vast majority of people use GC just fine and go about their day. We should update little to none when we see evidence of GC hardship.
It depends a lot on the scale of the system, which often means that those fewer users are actually doing things that are more complex and more valuable - either at the lower end or at the high end.