I’ve never met any.
There are plenty of people who have left Yiddishkeit l”a because in their homes they only saw Yiddishkeit as a bunch of rules, due to poor chinuch and poor role modelling. It makes no difference if those rules are halacha or chumra. In fact if someone, on his own (not merely due to community pressure) takes on chumras, he shows his children that Yiddishkeit is not a burden to him, but something he cherishes.