Considering that a lot of antis turn out to be actual predators who lure children into their sphere of influence by being a safe space that "we're not a creepy adult" we love to "save kids", and then molest them, your statement is wrong, groomers are kinda hard to spot when they disguise themselves as saviors of children.
I don't even like lolisho garbage, actually, and find it gross and wonder why they find simulated porn of things that look like prepubescent kids wankable.
But, to pretend that antis aren't just another group of freaks who have child molesters in their ranks is laughable. I've seen adult antis try and lure kids to adult fandoms so they can take part in the discourse, for fandoms that aren't for children. And then saying, "oh, that kid is actually mature for their age, they can look at porn of adults fucking." shits fuckin gross.