It's the new 'concern fagging'. Don't pay attention.
Autists understand that re-organizing their entire collection of 1000s of graphics into a finely tuned system that they can tap into on a moment's notice, takes time. Autists understand that tracking down a flag in a cabin in the nowhere of Finland, takes time. Autists understand that getting code perfect, reducing white space, trimming pork, takes time. Autists understand that winning against a good chess opponent takes time. Hell, autists can still be found playing the same vidya 13 years later, just to get a 'perfect' game.
The impatience-concernfags are not autists. Recognize them for what they are and do not engage.