So are they 'anti-science' for things like https://c19ivermectin.com ?

Of course they are because they a) think the sources lack credibility. b) identify with groups that have 'dogma-the-media-told-me-was-true' attitudes, c) it's a message that contradicts their beliefs, d) and it's mismatch between how a message is presented and their style of thinking (eg. not thinking, but being told what to think by their mainstream news).

So they don't mean 'anti-science' they mean 'anti-dogma-the-media-told-me-was-true'

So are they 'anti-science' for things like https://c19ivermectin.com ?

Of course they are. They don't mean 'anti-science' they mean 'anti-dogma-the-media-told-me-was-true' because they a) think the sources lack credibility. b) identify with groups that have 'dogma-the-media-told-me-was-true' attitudes, c) it's a message that contradicts their beliefs, d) and it's mismatch between how a message is presented and their style of thinking (eg. not thinking, but being told what to think by their mainstream news)