-Toads are treated like the only sentient species in the world.
That's another thing :( There could've been friendly Goombas, Koopas, etc. without inventing new characters, if new characters are really so horrible. --- I AM THE GREETEST! NOW I AM LEAVING EARTH FOR NO RAISIN!
If you think the Goomba-Goomba letter was bad, did you see all the executive Toad papers in 5-1, all ending their papers with their name: T O A D...
It didn't bother me as much; I imagined they were either unique acronyms or one guy's title. But I was pretty frustrated with the game by then, so didn't read the uninteresting letters too carefully. --- (I probably shouldn't say that out loud, though. Thank goodness for inner monologue.)