Poche is hardly the only forum member who will not admit that he (or she) is wrong; nor is he the only one who will not apologize for being wrong. The sedevacantists come to mind regarding this.
Don't think that I'm a fan of Poche. I am not. I've debated issues with him, and he never admits he's wrong - I know that. But he's not the only one who is guilty of this.
Poche is not merely "wrong" or obstinate. He is demonstrably a bad-willed liar and heretic shilling on behalf of Bergoglio and his cabal, and probably paid to do so.
I left the forum when it was made clear that Poche is unbannable and has some kind of protected status around here. However, the tireless - and, I daresay heroic - efforts of Mark79 to make Poche's stay here as uncomfortable as possible, in the hopes that he will (God willing) leave of his own accord, has inspired me to come back and join him in that laudable campaign.
Poche is not a "challenge" to us, any more than an actual conciliar AI spambot would be. He refuses to engage in any honest debate. He has demonstrated his devotion to Modernism, Religious Indifferentism, feminism, and multiculturalism more times than can be counted. He has openly blasphemed St. John Chrysostom. He twists and perverts the words of Popes, Saints, and Sacred Scripture to further the spread of error. So, as long as this forum counts among its members women and female-brained men capable of being swayed by Poche's perfunctory outbursts of false piety and false compassion (as is attested by the fact that Poche's "likes" count is higher than 0), then he most certainly be dismissed as "harmless" as he so often is.