I think what a lot of people who go "Mastodon is just a lefty echo chamber for people who can't handle debate!" don't understand is that not everyone uses social media the same way and most of us don't see Oxbridge debating society type arguments as a leisure activity. Normal people are just here to laugh at some memes, maybe see some cat pictures, discover a new band or learn some facts about sea creatures. Not everything has to be about challenging the foundations of your ideology.