The way merit are being given out to some post on this forum is turn abused, how on earth will a single post merit 30+ merit? and must of this post are just simple question or answer. Post are not suppose to be merit more than 2-5 depends on how helpful and relevant the post.
I've seen posts that
deserve 1000+ merits.
There is enough merits and the admin can make more at any time. If you see someone actually selling merits report to admin but otherwise just forget what other people are getting or sending. Even if you could restrict merits per post it's not going to help you if you don't make good posts.
The example post which you have given is of satoshi and its people love and affection that people have given a lot of merit to that first post. Other than that no post deserve 1000+ merits.
Also you cannot report selling of merits because you have no way to proof that the merit given is by the sale of it.