Twitter is already an echo chamber, so it's really puzzling how all of a sudden the echo chamber problem needs to be pulled out for other platforms.
Although the crowds booing trump after he announced he had his vax booster shot should give advertisers in this space some pause, sometimes the messages and disinformation create a life of their own that doesn't follow the script.
Just because the most egregious and dangerous stuff from one side gets deleted does not mean it's a place only for the polar opposite.
However the volume of users is sufficiently large that you can be swamped by any minority if you choose, no matter how tiny.