Writing a terminal emulator is a pain in the ass. Thats all I'm going to say.
1. I could do this in a weekend.
2. Nobody is solving it correctly so I will.
3. Years pass.
4. Actually, there are interesting difficulties.
His point with the Windows terminal is that, its a non-problem that people in the 80s and 90s already figured out. And if he really wants to make a terminal with the bare amount of features that he just needs (without the flaws the old cmd program has), he may be able to do so in maybe about a week (he already has code to render TTF text, and he’s probably accustomed enough to the quirks of the Windows OS APIs)
I think that’s the point being made here, that taken at face value it’s just ridicules that what is on the user-side minor improvements in usability over the status quo 20 years ago is still considered “an advanced feature”.