Jani The problem with Internet knowledge is this: people don't know How To Ask Questions The Smart Way, so rather than presenting the problem they're trying to solve ("how do I achieve X?") they present their own attempts at a solution ("how do I do Y so that I can achieve X"), and still get answers from helpful others to their real problem ("you can achieve X by doing Z").
The problem with this is that search engines (wrongly) pick the issue represented by the initial post as the question ("how do I do Y?"), resulting in frustration for someone genuinely interested in answers to _that_ question rather than solving an OP's true problem. Just google "how do I do Y" and you'll find a million threads supposedly about Y, but immediately derailing to "don't do Y, do Z instead".