Well, the famous story with the Vilna Gaon seems like you. He was in jail, and rebuked the guard, a Jew who had shmadded himself, for eating without a brachah.
The guard was taken aback. “I completely abandoned Yiddishkeit, and you’re worried about my saying a brachah?!”
The Gaon explained how a person will be held accountable for every single deed.
As the story goes, he came back to Yiddishkeit.
May all of our lost brethren at YCT come back to Yiddishkeit.