Earlier quoted context omitted.
There are plenty of examples where somebody who has influenced the world was an idealist, out of touch with societal norms. RMS has serious faults, but his virtues have an immense value in my opinion. ‘The reasonable man adapts himself to the world; the unreasonable man persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.’.
Tho, those unreasonable men also fairly often cause quite a lot of damage to their own causes and to world in general. Also, I think that looking at history, claim that all progress was due to unreasonable men is false.
This is because the definition of 'unreasonable' is relative. For Edison, wasting thousands of hours of lightbulb experiment was quite reasonable.
For most people before him, it was squarely in the unreasonable territory, and hence it took Edison for lightbulb to happen.