I provided four reasons why this was relevant and you jumped from communism to whataboutism? Talk about being intellectually lazy (Or a state-sponsored account)

There is a decent argument historically that communism and other left movements are extremist, racist, and anti-lgbtq. When you start banning concepts, you open your communities up to several things.

1. Group think
2. Banning of other radical ideologies that you may agree with
3. You alienate those people from exposure to better concepts
4. You jump start compaction cycles for large scale propaganda organizations that could lead to actual violence