It seems to me that Dreher is now expressing regrets about leaving the Church, realizing that he was expecting a "Community of the Elect", Ivory-Snow Pure, rather than the real Church on Earth described by Our Lord as a field where wheat and tares grow together until the Last Day, and a dragnet which brings up all kinds of fish, good and bad, and strange ugly things from the Deep.
I respect Dreher and give him huge credit for seeing this, and I wish him well as he makes his pilgrim away toward his Master and mine.
Coren, on the other hand, seems a much shallower and shiftier fellow. He apparently is a convert to the LGBT line, and dissents from the Catholic moral objection to contraception. At least there's consistency here, since if it's OK for straight couples to reduce sexual intercourse to sterile jiggery-pokery, then it's OK for homosexuals to do the same.
I thought Coren's book "Why Catholics Are Right" --- which I presume he has now abjured? --- was poorly organized and superficial, and now it doesn't surprise me that he's left.
Frankly, he seems to me a weak and vacillating man. But weak and vacillating men need salvation, too. I'll pray for him, and hope that those who see my faults will pray for me.
"It seems to me...." is the proper way to couch that thought. I don't find "regret" - perhaps you can. Rather, I find him sharing his deeper understanding of exactly why the corruption so deeply affected him. And it's about the healing of his own soul.
I am reading Dreher’s book and I agree with you, I respect his reasons for leaving, and think he may regret having left. Coren, holding the beliefs he does, was NEVER in communion with the Church, so all for the best that he left it.