Article starts of with the incorrect term "virtual shell". If it's supposed to be the character in the story using an incorrect term, I don't think it fits the rest of the article.
I feel like this article has been written better before, e.g. in the article's own sources.
So the article begins with a story where a character, who doesn't know what he's talking about, try to mentor one of his colleague. It might be awkward though, and difficult to understand; sorry for that.
For sure this article was written better by others, but to me they were also lacking some stuff. I never found an article summarizing the whole story; most of the other sources were brushing away too much information for me to understand really why the TTY device had this weird structure.
But I guess not everybody will agree... and that's fine :)
It was a very entertaining read, but you may have wanted to include Windows Terminal and xterm. WT is seriously good, and xterm is unrivaled when it comes to compatibility (but WT is progressing fast!)
For your next issue, I would suggest talking about pictures in terminals: from the historical sixel to the custom formats like kitty, and maybe connecting them with sixel-tmux
Actually, terminal session managers like screen and tmux would be worth another
I feel like this article has been written better before, e.g. in the article's own sources.