Though, commenting or not is a one's interest, there is nothing wrong in suggesting the people to do some good thing. When you are writing an article by spending so much time, you can certainly expect some feedback from the readers who are learning from your knowledge.
Anyway, this is my personal view only. Pardon me if I hurt anyone's feelings.
When opportunity is in front of you, don't hesitate to catch it. It will never come to you again. - Maverick
