Agree.Pretty much. I'm sure the whole thing will be addressed a lot more in the next chapter, but nothing is gonna change the fact that Sakura is Sarada's mother - connected by blood or not.
Plus, Sarada's reaction is proof that she wasn't emotionally ready to hear that Sakura isn't actually the mother. It's extremely ignorant and immature to discredit everything Sakura has done for her and suddenly not give a shit. It just goes to show that waiting until she was older to reveal the truth was probably the better of two evils.