YOI. Some solid evidence of plagiarism

EVERY artist in general uses reference. This does not mean they plagiarized. Kubo sensei has mentioned that her and her team went to the ACTUAL places to get the setting right.
Even if they didn't go to the places, artists will still use photos to reference settings and poses they have never seen before IRL.
If the YOI team have never seen the place, or a stripper dance, how can they get anything right without referencing.
They can't just pull a memory of a stripper pose out without ever seeing one. The people creating this could be married, you want them to tell their spouse "Hey, I'm going to a strip club for research"??
Also, most animes use real life places as settings, because they want it to feel as realistic as possible (slice-of-life genre), it's nothing new.

For the ice dances, some people can tell YOI never created them. YOI could have based their characters off of certain skaters. This isn't shocking if it's true. Real life figure skaters support YOI apparently.

As for the Twitter post, this, I do not have a comment for. I do hope it was a joke Kubo sensei was playing, because YOI is more than just bromance, and I highly doubt a homophobe would lead/create a project like this.
She probably got tried AF from people who don't understand the language and culture complaining to/bothering her. I remember in an interview she said she was surprised foreign fans needed confirmation about the kiss, when Japanese fans just KNEW.
I used to have homophobes as friends, and trust me, they would not make something like this even if you paid them a *beep* ton of money, they were that disgusted.

I have no idea why I need to explain such a simple concept. I actually feel regret checking back on this even though I'm through with this topic (I use IMDB on an occasion though, so I was curious, but clearly, this was a mistake.) Sadly, as someone who has many artist friends, I'll feel bad if you continued to live your life naïvely about this topic.

Good day, and goodbye.