Dofi, if crazy people tell others to play in traffic, they’re just nuts; they’re not apikorsim.
Smerel, NK might not do kiruv (i have no idea if they do or not) , but their presence and their dress might serve as examples for these kids that you could be super religious and fit their twisted political agendas that they were indoctrinated with in school, which could be a stepping stone to yiddishkeit. Far better than the “we’re Jewish and pro Palestinian” crowd who are very anti Torah.