Ok.
There is no forcing that do comments or else you will die. There are people out there who read some posts, like them and want to engage more with the author. In this way two birds can be caught with one arrow (you can make engagement plus gain points if made with ecency). So it isn't forced, it is just the mindset of the person.
No one is standing behind you with a hunter in the hand that do comments or I will whip your back😅