I’m still trying to figure out how an arrogant scientist whose creation killed over 450 Starfleet crew members on two starships and then went insane himself got a prominent technological institute named after him.
Considering that despite his failures Starfleet has muscled on with fleet automation ever since, no matter how many times it destroys the fleet, I suppose they consider his failure aspirational.
I would make the case that in the Star Trek future, people have learned to be able to see beyond an individual’s mistakes (even egregious ones). The M-5 was certainly a dangerous mistake, but Daystrom had good intentions and was working on a project of great interest to Starfleet Command. The results were completely unintentional on Daystrom’s part, and he clearly was not emotionally stable by the time “The Ultimate Computer” occurs, so I think that in light of the many tremendous impacts Daystrom had in computing that society was able to understand and forgive.