So only people who have been wildly successful have the right to share their thoughts? This guy failed and writes a blog post about what he may have done wrong

So only people who have been wildly successful have the right to share their thoughts? This guy failed and writes a blog post about what he may have done wrong and includes the advice he got from his mentor. Agree, disagree or ignore, but I don't see how your comment adds any value. BTW - There are plenty of successful people offering awful advice. Can't we just try to evaluate ideas on their merits?