No, players render content useless. Before there was Roulette people trying to get their first runs of Sastasha and Toto-Rak would often sit for over half an hour in queues cause they were the only ones actually queued for them. It's that very reason we have Roulettes now! But there's still long queues even with Roulette so little wonder they ease the difficulty of the older content if noone's running them. They've done everything they can without imbalancing the game to get people to run old content and it's not worked anywhere near as well as people seem to want to believe.