"I agree. Just to point out that hierarchy argument is quite weak given the current situation. "
That's a solid test of who the, "Oh ye of little faith" shoe fits like it was custom fitted to their foot.
A better argument might be that authority is collective among those who have been educated and trained in the field, but it also must withstand the test of generations.
A Pope, or even a generation, can be in error, but, in Catholic parlance, the magisterium, considered over generations, can’t be in error.
Most religions have some version of this idea. Catholics have a hierarchy and Pope (mostly just in theory these days), which is a bit unique.
“You can fool all the people some of the time, and some of the people all the time, but you cannot fool all the people all the time.”