They are still canon though...yet
The only reason why SS became so popular again was because of that forehead poke, no one thought they were going to become canon. I mean it did not feel like that until the ending of the Kaguya arc with that BS stare like Sasuke gave a shit.
Now people imagined that their relationship would have been real all these years, and they even had headcanons that Sasuke and her dated when sun went down (Lol) and he traveled with her anywhere she went silently. Then they read this chapter and found out their relationship is messed up to the core, there might not be a relationship, Sakura's character was thrown into the ground again, and the byproduct of SasuSaku called out the relationship for what it is even though she does not have the full story.
I always knew the relationship was bad - Forehead poke or not - This relationship can't be saved in my opinion.