I think this is a fake quote that somebody made up for an Internet comedy bit, since it seems unlikely for Hollywood actress Sydney Sweeney to have such uncharacteristically strong opinion on software version control, of all things.
Because she of all people would know that there isn't anything wrong with using git merge, and it ultimately comes down to personal preference to what you are used to.
Margot Robbie, I was about to agree with you and thought that was a very reasonable take, until you tried to argue that git merge is better than git rebase, then I simply had to disregard the whole thing.
But esteemed Academy Award nominated character actress and film director, Margot Robbie, if it's unlikely that Hollywood actress Sydney Sweeney said this... wouldn't it be just as unlikely that Margot Robbie would be here? Adding her own comment?
... are you projecting? Is there something you want to tell us esteemed Academy Award nominated character actress and film director Margot Robbie?