I’m only 57, but I’ve never met anyone who hated Catholics who didn’t also hate anyone who called themselves Christian. I’ve been a baptist since I was 14.
Disagreeing with Catholic theology is not the same as hating Catholics. Not by a long shot.
I am always amused when someone uses that old 'the demons believe and tremble, but that doesn't save them' line. The demons have no faith because they see Jesus for Whom He is, as attested by the demons Jesus cast out into the swine herd, etc. We exhibit faith when we believe in Him, and it is faith erupting from the broken and contrite spirit that God acts upon to make us/them born from above, as Jesus taught Nicodemus.