Why not?
They think gthey are the big dog on the porch.
“Holy Roman Catholic Church”
The name screams PHARISEE!
We are the big dog. Your denominations are tens of thousands of splintered groups with no coherent and common structure of beliefs. The only thing y’all can agree on is you think the Catholic Church is wrong.
How can you ever know what is the truth when you can’t even agree amongst each other?
Sola Scriptura doesn’t work and never has.
Come back to the Church of your father’s.