It is intellectually dishonest to react to the film for a version you SUSPECT exists. Do you even listen to yourself? Part of your dissatisfaction with the movie is for something you only think might have possibly existed. That's absolutely ridiculous.
The conspiracy that there was some major and drastic change to the plot made AFTER principle photography is just that: a conspiracy. Find the evidence (which isn't a 4Chan post about how Helena goes back in time and replaces Indy, by the way). Mangold has said there were no significant reshoots. Karen Allen has said the final ending is more or less in line with the original shooting script she received.
But the only thing people have to go on is a comment by John Williams about having to rescore part of the ending. So what? They likely DID do some minor reshoots of the ending to create better clarity -- it happens ALL THE TIME -- and that very likely would have required adjustment to score to align it.
The instant Waller-Bridge was cast, a certain subsect of the fandom decided to lose their minds and decide the "agenda" was to replace Indiana Jones. And when that didn't happen, they can't seem to handle it, so now it must be a reshoot conspiracy.
JFC, you lost all credibility when you admitted that you're reacting to something you have no proof is real.