I think they forgot to turn off comments once but quickly turned them off again.
GW is still very old school in their PR approach. They only want curated and controlled consoomer interactions so they can shape a corporate image for GW, so they don't have comment on their youtube, their twitch is heavily moderated, and their twitter is (other than the odd political sperging) just advertising.
So they can't possibly have those horrible fascists giving their opinions freely and associating Warhammer with nazis.