Did you look at the date of that blog post?
As far as I know Itch does not accept submissions anymore for that kind of promotion. Maybe I am mistaken. But the impression I got, is, that you can't promote your game on itch. Like paying or suggesting your game to itch curators to put it in their youtube channel or the featured list on the home page.
Maybe they read the accouncement board or devlogs. Or maybe they still have a suggestion box to apply, that I am not aware of. But I am not a game developer and would not look out for such things... ;-)