This, sadly, is no longer true for the Steam version of the game. It comes with a (pretty good) tile-set, which is enabled by default.
I still think, the old ASCII art and keyboard-centric UI was better, but well…
My understanding is that the steam version released with no ASCII tileset, but there is one now after an update. I bought the steam version but haven’t played it much at all, so I haven’t confirmed this myself.
Yep. In addition, there is now a free build of version 50.xx on the official website, which uses the same code as the Steam version, but does not include the tileset and the soundtrack.
I tried that free build on the weekend (because I didn’t want to bother with installing Steam on my ARM64 laptop), and it still looks as amazing as always. Now I just need to learn the keybindings for the Steam version - because using a mouse with ASCII graphics feels just wrong 😉.