I really can't buy that Yuuri had NO idea how he acted at the banquet! Sure it makes sense that he got too wasted to remember, but how could he not find out later from social media or the internet?! His phone would have been full of messages the morning after! Dudes suddenly stripping on a pole (am I also the only one wondering how the pole got there, too?) would definitely have ended up in several gossip blogs. Especially if skating megastar Victor Nikiforov got involved in the fun! Idk
At the beginning of YOI, we see Yuuri looking up news articles about his performance, even with Celestino actively encouraging him not to.
Not long after this, Yuuri goes off to the restroom and breaks down into tears.
As a sensitive person myself, I can say I’ve experienced painful moments like this in my own life. You eventually hit a point where your brain rejects any additional input because it’s protecting itself. If you see something else that makes the pain hurt even worse, it’s very normal to have a “NOPE” reaction and do everything in your power to avoid that additional pain.
We see Yuuri having another “NOPE” moment after his viral video gets posted.
He doesn’t read the comments on the video or look himself up on social media. Yuuri literally drops his phone and shuts himself off mentally from the world.
He’s not emotionally equipped to handle anything else. His brain rejected that information in order to protect him.
I do think it’s possible Yuuri never found out through others what happened at the banquet, though it would require work on his part to avoid it.
Maybe people did try to point out posts about it, and he just chose not to look. Maybe he shut his phone off and stopped logging into social media for a while until the news quieted down. Maybe Phichit or Celestino tried to mention it once, and because Yuuri got so upset and sensitive about the topic, they never brought it up again.
That “NOPE” feeling is awful when you get there. It’s an overwhelming sense of “I cannot handle anymore” and you just shut yourself off.
So yes - I do think it’s possible.