That's because the guys you heard complaining are/were elitists. And people whom you can label as "elitists" are almost never good (there are very rare exceptions, but I would like to put the emphasis on "very rare"), as most of them insist on calling everything below some arbitrary standard level to be crud without even taking a look at it, often for inappropriate reasons. I mean, seriously, many good roguelikes can be played with tilesets instead of ASCII, and that doesn't make them any worse. Graphics (and those aren't super-duper-3D-whatever, but mere pixel art and 2D sprites) don't make it any worse as a roguelike game, it is still part of the genre, it just is not as complicated as, let's say, Nethack, and it's more accessible for people who aren't aiming to become hardcore players just to be able to beat one game. If anything, I'd say it's a "casual roguelike game", but the word "roguelike" is still there, it just isn't the only word.