Catholics read from the Old Testament, the Gospels and the epistles at EVERY MASS, traditional Anglicans and Lutherans typically do the same; however, the Bible Christians just let their preacher pick something to read and talk about and more often then not this is from Saint Paul and not the Gospels.
I suppose you can pick a few from the minority any time and say "I've been told". Kinda how we see Pelosi & Co. say abortion is OK but we know they are not necessarily representative of the majority of Catholics. The vast majority of Protestants do not believe that Paul's writings are uninspired.
more often then not this is from Saint Paul and not the Gospels.
Nonsense. Your experience is very narrow. The Gospels are read from all the time in Protestant services.