It seems to me that the bad reviews were published on the site regardless of their offer. So I can't see how is this extortion.
Extortion would be along the lines of "we publish some made up bad reviews unless you pay".
Extortion would be along the lines of "we publish some made up bad reviews unless you pay".
This is taking money from an unwilling person by duress, using an undue exercise of power (ie control of bad reviews on their platform).
You ask people for money to not do something that's in itself legal.
It's a topic ripe for tortured moral philosophy :)
It also has a definition that 99% of the people you are communicating with, who are not lawyers, are more familiar with:
the practice of obtaining something, especially money, through force or threats.
You're sperging out about the wrong thing to the wrong people.
Whatever you'd like to call it, it's scummy behavior and they deserve to lose any market share they've gained by misleading users about their service.