I imagine that it looks that way to cynical outsiders, but in reality it’s quite different, not just because we’re right and they’re wrong.
Many Jews are not antagonistic towards Yiddishkeit, they were just not exposed to it very much. Although we would love to attract even antagonistic Jews, that’s not very realistic, so I think the goal was to attract the first group.
However,an invitation to a frum Jew to a chofshi weekend, or a Sunday Christian brunch, is an invitation to an antagonistic group or person (not that we’re antagonistic to non frum or non Jewsh people, but we are antagonistic to the ideas they’re trying to convert us to).