I was thinking more to something like some percent, to not take forever.
That could work, 10% per year would take some serious effort to keep the Rank. But I don't think it will happen.
And maybe I live in a dream world, by buying merits is not so wide spread (as buying accounts) and risky (or riskier) too. And if it's risky and expensive it may not worth the price (one can hope...)
The spammers promoting a scam get tagged the moment they show their signature. They don't care about negative feedback, so getting tagged for buying Merit or accounts doesn't matter to them.
Reporting does help, but I feel that it's an underused feature.
Ignoring them helps them; the shitposts don't get reported, the signatures get spammed, the newbies get scammed. You know the drill...
I know the drill, but ignoring them means I can spend my time reading more good posts. That's why I'm here after all.