I think that's perfectly fair - why should someone be able to create an account and immediately start being paid to spam the forum with trash? If you want to earn money form your signature, then you should first have to earn the right to display a signature.
Well, that's the problem isn't it.
Earning the right in a fair an objective way would be one thing. However you are not earning the right in that way. You are waiting for those whom get the highest rates of paid2post to
1. bother to look for your post in sections like the main discussion boards some merit sources have on ignore
2. dream that people with financial motivation for taking certain actions wont act selfishly
3. hope you opinions of even presentation of facts fit with the ideologies they want to push
4. hope that those merit sources even have the capacity to understand your posts are provably correct so they dont go meriting incorrect misleading posts that they just prefer the sound of or actually think are true.
5. Hope you have not offended them in the past so they hold a grudge because you presented previous facts they didn't appreciate being presented.
probably others too
So you see until you can make sure people all earn their right to paid2post on a fair and equal basis then your argument does not hold water.
The other points you make are built upon the observable fact that merit is not some score you can present as a solid measure of value or achievement.
I agree something needs be done but it needs to be fair, transparent and provide a real meritocracy here.