Some wants genuine and invite criticism so that they can improve, others only want praise
2. Person who provide criticism
Some are genuine who provide real criticism so that to allow others to improve, others are sour grapes. Sour grapes only good for vinegar as cooking ingredient. Same grape can produce wintage wine, others produce vinegar.
Fully agreed with you, CKIANG. You got strong heart and you have cross the chasm. Just ignore those who give unconstructive criticism. I notice most comment is just good, wonderful. It's not their fault that this is the only comment they made. It takes a knowledgeble person to give constructive criticism. If you are not good or an expert in the subject, that is all you know how to comment. It's nothing wrong, it's just their appreciation that they see something nice and appreciate if.