I heard of substack for the first time when they made the statement that they were absolutely going to allow Nazis. Now that they said they were not going to allow Nazis I went ahead and looked at the front page. It seems to be the same collection of conspiracy theory and alt right loonies that have been chased off of every other social platform
I’m going to guess it’s like Odyssey and there’s some decent content makers deeper in the weeds. But there doesn’t seem to be anybody worthwhile on the front page