The reason you don't give unsolicited advice is not because people don't deserve it (points 1 & 2 in the article) but because if they didn't ask for it then the

The reason you don't give unsolicited advice is not because people don't deserve it (points 1 & 2 in the article) but because if they didn't ask for it then they probably aren't prepared to act on your advice; or they don't view the subject of your advice as a problem; or they are already fully aware of your advice but a bigger issue is blocking them; or due to some other information that you don't have so you don't fully understand their problem and they resent your assumptions about their problem.