You didn't say in any form "in my opinion, unless you've..." You stated that "if they have not done this, they're not..."

I do not agree that all the players who say those things are the players who do not raid. It's just players not content with certain short-comings. Maybe you don't express your concerns but that's your business.

I did not say personal experience, I said years of experience. There is a difference. If you've raided the same raid for 3 years and the next guy has raided 3 raids for 1 year.... Does that make sense?

Anyway, you're getting confused and side-tracked. The bottom line is that you shouldn't dismiss somebody's ideas or concerns or project ad hominem because they do not fit your idea of what constitutes them being worthy of having an opinion.