Many of my friends in Orthodox Judaism read Failed Messiah but most of them loathe the author Shmarya Rosenberg. They argue that he’s filled with rage against Orthodox Judaism and that he’s coming from a bad place and therefore he shouldn’t be given credence.
Other of my friends argue that even if he is coming from a bad place, he still has valuable things to say.
None of my friends in Orthodox Judaism regard Failed Messiah as coming from a good place.
I’ve been on friendly terms with Shmarya for a decade and I think his website is invaluable. It doesn’t matter to me whether or not he or anyone is coming from a good place. I don’t think you can judge people on their motives. I don’t think we can know our own motives, let alone anyone else’s.