Because such an approach devalues posting as such. The assessment of the post itself fades into the background, and things that are not related to the merit, such as the user's activity, to whom how much he gave what, to whom he is friends, and so on, come to the fore.
I think we are blowing things out of portion here. I am not looking for who is friends with whom and stuff like that. I am only doing the most basic of checks. If the poster receives merits I want to see a history or sending. That's where the check ends. Amounts and to whom aren't important.
And here we get the following situation, a person can write satoshi-level posts, but users (merit sources) don’t give him merit, because he doesn’t distribute it to anyone. Who are we looking for here, posters or distributors?
I touched briefly upon this subject as well in a previous post when I said:
The only exception are new users who have just begun receiving merits and people who absolutely don't care about them and have merit-worthy posts.
That also goes for satoshi-level posting and excellent members who bring quality to the forum. But not everyone fits in that category.