A Thought Experiment Question for Christians ah church leaders specifically. So you did mean something quite a bit different from the thing you said, thanks for clarifying.
Yes as far as I can tell, officially the majority of Christian churches, maybe all non Mormon Christian churches, consider Mormons non Christian or at the very least reject Mormon baptism. You are correct about that. Not the thing you said originally, but this new thing you're now saying, yes.
It's interesting that Mormons also don't accept the baptism of other Christian churches.
Anyway, I don't think this is the best metric for determining who we ought to consider Christians. I mean, 90% of Muslims are sunni, and a huge portion of them would say Sunni is the only real Islam, the other 10% aren't real Muslims. I wouldn't take that seriously from a sunni, and I don't personally take the comparable thing going on here from other Christians all that seriously. I mean, maybe if you're a Christian it makes sense for you to take that seriously, but I'm not beholden to any particular churches dogma and thus I'm not obliged to apply some arbitrary rule to decide Mormons, who are Christian by any obvious metric other than popularity among other Christians, are somehow not Christian.