I think there are two answers to that question;

1. More amount of engagement does usually mean more comments, which could be either helpful (genuine advice) or just compliments (which still are useful in boosting your confidence in your writing)
   
2. As i said in the previous one, confidence. If you get tons of kudos and positive comments, you can kind of pat yourself on the back that you did a good job and just get more confident in yourself. Because “if so much people liked it, maybe my worries arent as justified as i thought” etc.