I'm sorry, but this "sneering" attitude is hideous. It's OK to do this job yourself if you have enough experience. It's also OK to not do it yourself because it is, in fact, dangerous. It's also OK to suggest that other DIY'ers err on the side of caution if they aren't 100% confident.

What's not OK is insisting broadly to man up and do it yourself, stop being helpless, etc. You could encourage an innocent person to severely injure themselves. It's pointless and irresponsible.