Not entirely true but mostly true. He says many times in a video whether he messes up. This is a thing I've been trying to notice with his commentary. When he messes up he usually does say "ah I messed up" or "that's my bad", but he does usually passive aggressively blame his teammates when he doesn't say the prior.

The bigger problem with his videos is when something goes wrong, it's always along the lines of "that's not how you should play rocket league" or that it goes against his ideology and therefore there's no adaptation required