That is just not true. I am a non-Catholic considering conversion, and I have learned a lot from ultima ratio and the other traditionalists here. I find his posts to be eloquent and informative. In fact, since it is the Latin mass that speaks to me as the Novus Ordo does not, the existence of the traditionalist movement which includes many who share my aesthetic and political preferences makes me more likely to join the Church, not less.
If there were no traditionalist movement, if all Catholics everywhere had simply gone along with the post-Vatican II changes and the Latin mass were nowhere to be found, I would definitely not have any interest in becoming Catholic.
I'm a traditionalist Catholic as well, but that doesn't mean I slander the Pope as some do here!
If you are considering conversion, please try to visit an indult Mass then. Hopefully there is one in your area.