Can't you have multiple users in a dungeon in non text based games? See WoW and RuneScape.
Roguelikes have evolved from being text based long ago, so I don't see why MUDs have to be.
So you say, but I notice you made a text post and not a reaction vlog.
You seem to be suffering from the misconception that text-only is a _bad_ thing.
Roguelikes use text as symbols, rather than being primarily literary. This comparison doesn’t make sense
What’s the point of books? Can’t you just watch a movie?
Because then it would be a different thing?
WoW and Runescape exist. But MUDs exist too, and text and graphics have different possibilities. So it makes sense to have some of both in this rich world.