Majority of us here are guilty of this practice not only on one campaign we are tempted to reply on one thread because we thought we can give a better answer than all the rest we scroll on the first page of the reply and you saw that your reply can be unique than all the others, but you did not know there's a similar answer of your post on the second or third or fourth pages, but it's a waste of time scrolling all the replies that can go to 10 pages to see if there is a similar reply that you are going to post, it's going to be a lot of burden.
If this is the case the participants will just prefer to open a new thread or give them a rule that you can only reply to a post that only has 5 posts that's quite hard because all-new thread gets a minimum 10 replies in less than an hour.
You just summed up in 1 paragraph how lazy people can be. If you are not going to read a thread, you shouldn't be replying in it period. Users that do like you are saying deserve to be sig banned at a minimum if not banned on the forum.
Earning money isn't a problem here, but lazy half assed posting habits are.