Imma be real with you. I agreed with everything you said and was going to make a message about how right you were... UNTIL I clicked the link annnnnnnnd.... ooooooooooooooooof.... I don't.... I was scrolling down this thing and my reaction was...
I dunno who wrote this buuut... like for example, writing characters off has been a huge interest of mine. I'm like "how's a character going to go-out?". In real life, anything can happen. Like how death doesn't discriminate. It just happens. Honest to God, I winced when I read this.
"Is this hero the only Korean character in the story? Or worse, the only Asian character? With your major Asian character dying, I’d recommend having at least two side Asian characters who survive, preferably at least one Korean character included (this would probably be most natural as your male hero’s friend or family)."
I've always felt it a bit disturbed that people are like "DON'T WORRY [BLANK FOLKS]! I HAVE TWO BACK-UPS FOR YOU!!!". And true, there could be history behind that particular trope, but that type of mindset should never be the answer. I've also seen this type of behavior lead to tokenism which if this is the guide on Tumblr, I think I'm starting to understand why certain racist tropes persist in people who have good hearted intentions on that site.
Despite me agreeing with the writers in some sections, the writing philosophy is flawed. Don't get me wrong... I do recommend getting perspective. My best friend has been giving me advice for three of my main characters for example. But I honestly think the person should ask their friends instead. People that they know fairly well. Or use personal experiences. Or expand on the cultures that they've managed to meet to grow further appreciation of it, creating realistic stuff (maybe finding yourself as well in the process, learning about cultures that have interacted with your own).
I'm sorry if I'm probably being harsh here. I get that these people are trying to do the right thing but I do get a little miffed since solutions like these leads to the cynical glossy schlop that corporations try to peddle.