It seems worth mentioning that a big part of the Protestant Reformation was the removal of the Deuterocanonical books. As a result, Catholics consider these books part of the Old Testament but Protestant Christians (the type of Christian I think most people mean when they are considering Catholics as distinct from Christians) do not. Source: https://en.wikipedia.org/wiki/Deuterocanonical_books

This is more often the case with open access journals and a lot of the time the department of the researcher or the grant funding the research will have some funds set aside to pay for this. This is becoming more common, but a lot of the more prestigious journals (where publishing is more likely to help your reputation for tenure or getting more funding) aren't open access, at least not yet. It used to be the case that any journal that required you to pay to publish something was more than likely a scam: a journal with little to no review process that would publish just about anything, meaning most people wouldn't bother reading your research if they saw it published there. Things are definitely changing, but slowly.

I like many song by the Beatles. I think they're overrated, but my impression of their rating by others is absurdly high.

Calling people that think they're overrated "deniers" seems in-line with my general impression that their rating is just too high, possibly for any band. I know you probably didn't mean it totally seriously, but I personally read it as more serious, even if not totally serious, than calling someone an Elvis denier as an example.

It also might stem from the fact that I more often tend to view music in terms of things I like and don't like, rather than good or bad. As a result, any time there is a discussion of the "best" bands of all time (and few such discussions would leave the Beatles out without specific selection criteria), it's hard for me not to consider all of the bands mentioned as overrated by whoever is ranking them.