Matt Cromwell's Facebook groups are rather shady. I was banned from his group for warning members that an increasingly well-known blogger (name withheld here) was being paid to recommend products without posting the required FTC disclaimers:

https://www.ftc.gov/tips-advice/business-center/guidance/ftcs-endorsement-guides-what-people-are-asking

That blogger was doing the same thing in Cromwell's group.

What the WordPress community doesn't need more of is backroom dealings between "influencers" that border consumer fraud...