Its always been somewhat of an issue, but more recently the shut down has also been facilitated by the platforms, as they have an agenda, are concerned by legal issues or straight up want to flex authority.
I personally feel good debate is better in the real world, chat with people and open your mind. Its always a good way to get people practising their critical thinking skills. You can always start the questions..is big tech good or bad? what could be the consequences of letting your device think for you?