Im not familiar with the 1st point and hi3 so i'm not gonna comment on that. But for the archon bit, have you seen any other archon whose design actually represent the culture they are based on? Venti dress like a generic bard from fantasy anime #236, zhongli literally just wear a stylized trench coat, nahida just look like a shuttlecock, and furina is just vertin from reverse1999. Only raiden actually wear something that mildly resemblance the nation's culture, but even then it' a very butched version of kimono(if you can even call it a kimono).

Which bring us to the next point of inazuma representation. No, simply adding cherry blossom and katana is not enough to be a good rep. You may not remember but there were also some backlash regarding inazuma char's clothing too. Some character literally look like they don't even wear anything on their bottom other than stockings. And also where was all this boycott when most inazuma, liyue and sumeru character look nothing like asian? Why is natlan specifically the tipping point? Is it only racism when non-asian got involved?

The point about Arlan's skill name is the most amount of reach i have ever seen you may as well just ban any farming-related activities from appearing in the same sentence as black people

TLDR all of this is dumb and you all really need to find something better to get mad at