[wpietri]

You've answered your own question. Spin is manipulation: https://en.wikipedia.org/wiki/Spin_(propaganda)

The theory of well-regulated public markets is that all investors and all seekers of cash are put on an equal playing field. The goal is to maximize public confidence in the markets, which in turn maximizes the total useful investment. If hype becomes dominant, that will reduce overall returns and increase return variability. That in turn will reduce investor confidence, which reduces available capital, which reduces economic growth.

I understand that in the US we spend ~$500 billion a year on commercial manipulation, so it can seem normal. But it doesn't have to be, and maybe it shouldn't.