To my mind, most "authors" (at least with regard to this forum) post recipes with the sincere intent of helping others produce excellent curries and accompaniments (in their minds, anyway). I don't, for one minute, believe anyone would post recipes in an attempt to "con" or deceive anyone.
The "peer group review" happens anyway. People post recipes, "peers" (i.e. other people) try them, and some post their findings. The more positive feedback received probably means that more people are likely to subsequently try them. What's the problem?

We all try recipes "at our own risk" (whatever that means?)!
Having said that, a simple mechanism, for individuals to quantifiably rate recipes, would be great (nothing new in that opinion of mine....)