The internet is what it is. The best we can do is ignore the mindless junk that floats around and try to engage with people who are actually saying something. Censorship is absolutely not the answer, because nobody is sufficiently wise to know the correct line at which to engage the red pen. It always - every time - ends up representing straight up political repression. The idea of just stopping "misinformation" is itself propaganda and has been used by every propaganda apparatus throughout history. It is as old as large-scale civilizations themselves.