Hey, I like the jokes. And I'd definitely rather have them messy than not have them all. That said, I'd definitely rather have them clean, than have them messy.
What is the actual "problem" with bad grammar showing up like that? It detracts from the immersion of the gameplay. Rather than being able to smoothly read that screen and move on, my mind is forced to stutter, essentially, reading the text two or three times to decipher the meaning, before proceeding with the game. For those few seconds, mentally I'm no longer playing the game, but deciphering grammar. In the grand scheme of things it's certainly not a big deal, but lots of little things can be as big a problem as a few large things, if there are enough of them.
- Ash