I've not had it happen with the 4" cups, but the 2" net cups I would have pop through the lid, even though I drilled the hole for it with a 2" hole saw, the weight of the plant was enough to flex the plastic and let it pop through, then the whole plant is in the reservoir, and if you don't catch it in time it can be a mess.
Towards the end of the Lil Mobstar x Livers I grew, I just gave up on it and let it sit in the reservoir, there was no keeping it from popping through, and it was like a week from harvest. I said screw it, if the base decides to rot I guess I have to harvest early.