Whichever opinion is currently being frowned on by society, will always be more prominent in the fringes. The left will talk about how right-wing conservatism is the current populist trend until they're blue in the face, but the reality is that the only people being censured by the media, universities, private companies, etc. are people with right-leaning views. I don't agree with all of them, but I can't remember the last time I read an article about a professor being let go for being an "extreme leftist". Being extreme-left is seen as being brave, pushing the envelope, exploring new ideas, fresh, edgy but interesting etc. Being extreme right is seen as dangerous, fringe, unacceptable, backwards, and so on. And so what happens, is that one side begins to feel cheated by the system, left out of popular discourse, and will then turn to alternative platforms to discuss their ideas. And hence you get the less mainstream, more free speech loving platforms being right dominated.
This is why I firmly believe that all sides should be allowed to share views. The best way for bad ideas to be shown for what they are, is for them to be debated publicly. Unfortunately, that is not what we are seeing happen. And that also means that anybody who isn't censured, thinks they're onto something good. It gives them an inflated sense of worth. See: Twitter checkmarks.