It's easy to say that Pam is even more DUmber than Beth Ferrari, but she really isn't.
Beth is willingly and voluntarily the DUmbest person on all the internets, lol.
With Pam, you're seeing monumental stupidity, true, but it's enhanced and brought down to Beth's level by an unfortunate genetic accident.
Pam is both DUmb as an ox, and a "special" person.
Her DUmbness is like home run records for Sosa, McGuire, and Bonds - in large part bogus.
I'd say Pam is stupid* with an asterisk, to acknowledge the unfair chromosomal advantage she has in any competition on stupidity.