The logical inconsistency- If Bae was around to have Henry with Emma (Glad they didn’t forget him) then why would Rumple still need the dark curse? Its original purpose was to get him to the land with out magic so he could find Bae.
So I kind of made up my own theory to go with this since i don’t think we will get an explanation from the writers:
Everything up until the Dark Curse remained the same. So, WISH Bae still took the bean to The Land Without Magic, went to the Darlings, and then went to Neverland. This would lead WISH Rumple to think that his son still traveled to TLWM, which would make him pursue the Dark Curse (as we know he did in real life). Now as far as I can remember we didn’t get an exact date or time that Bae traveled from Neverland to a Land Without Magic. I always assumed he was around the same age as Emma, and he was at least 8 or 9 in Neverland, which means Emma would have had to grow up in TLWM a few years before Bae technically escaped Neverland so they would be closer in “age” (ignoring the fact that Bae is actually centuries old). So, in this theory, that does not put WISH Bae in TLWM at the exact time the curse is supposed to be enacted (he would have still been in Neverland). Meaning, WISH Rumple would still be perusing the dark curse to try to get to the land he believes his son traveled to, just as he did in the real timeline. So even though WISH EQRegina was defeated and the dark curse was never enacted, WISh Rumple was still trying to pursue the idea.
Now, how WISH Bae ended up back in the enchanted forest instead of in TLWM world is just a guessing game. My best guess is that the Shadow just took him anywhere Emma was, since they were fated to be together to produce the Heart of the Truest Believer and we all know Pan was waiting for Henry. And his death in Wish land? Probably died in a battle of some kind before Henry was born? Slaying a dragon or something? I dont know, again a guessing game. And unfortunately, answers we probably wont ever get.
But this is how I explained the whole thing in my head. Of course there are some loopholes, like Rumple being a seer. But what is a Once theory without a few loopholes, right?