Optim optim81@yahoo.co.uk writes:
Do you think it's true?
No. I've seen no evidence of this process.
and how can we answer this argument?
Ask him why an average person would wish to ruin a good article? And why the community would then leave those detrimental changes unreverted.
Furthermore, ask them to point out a selection of good articles that was edited to averageness by the intervention of the mediocre. Theories that don't have confirming instances may cheerfully be disregarded.