Almost certainly the latter, because Adam West's run as a kid was not on all that often, since his childhood was the 80s and certainly not what he saw. At best he might know this variant of Batman from the Superfriends series, which was very sanitized and safe.
He also is a smoothbrain who only likes babytier shit with no complications and a good-evil dichotomy, so he would prefer that 10 - 15 year period over the 50+ year period where Batman was more hardcore. Especially since he's a whiny bitch who doesn't let self-imagined grudges go, and he delusionally believes that his enemies like this stuff.
He's the equivalent of me screeching Batman should kill people since his Golden Age self used guns and didn't give a shit about people living.