Jump to the 6:31 mark
James Rolfe, a.k.a. The Angry Video Game Nerd, reviews poorly designed video games. In his relatable review of the classic NES game sequel, CASTlEVANIA II: Simon's Quest, not only does AVGN describe this game as being one of the worst designed ever, he brings up a legitimate point about the confusing use of lowercase letters—especially the lowercase L—in passwords. At the 6:31 mark:
In general I hate games that have passwords like this, because sometimes they have uppercase and lowercase letters. Like the L's, you know, look like i's, the zeroes look like O's, the 8's look like 5's, so, you know, why does there have to be so many digits? You know, like, why can't it just be numbers or something? Like, you know, just numbers and not letters? I mean, it takes me like 5 minutes to enter this code when it should only take like 5 seconds. It's friggin' stupid.Game over, dude! I couldn't have said it better myself, AVGN.