Liking doesn't require you to exert so much effort, it's just a matter of clicking.
Liking requirement is only for protection in the first place.
Another thing is for respect and appreciation to those thread starter, because most of the time even the word "thanks" from those who benefited are nothing.
Try to become a thread starter, and you will realize what i'm saying.
Likes just help those receiver of it to gain points and earning points doesn't make them earn m0ney or even those things that will make them benefit.
For me,the likes that i received makes me happy and encourage me to share more.
Anway, you have the freedom to unlike if those tuts doesn't work at all.