This isn’t supported by the fact that all these things were being done on the PLATO Computer system long before anything you cite. Dungeon Master is more of a theft of other people’s ideas than anything.
Search for PLATO Computer system and pedit5, dnd, oubliette, avatar, moria, pits of baradur
The system is still being emulated and you can play the old games here: https://cyber1.org/index.asp
