In the "Essential Info" page, https://www.chess.com/news/view/chess-com-clubs-league-essential-info the definition of a club was "clubs must have both an in-person component (regular meetings) and a Chess.com/club presence."
My club, Badgers Brook Chess Club was initially refused entry to this tournament on the basis that we didn't have "physical "face-to-face" chess club that meets in person". I had to provide evidence from the webpage of our national federation (Chess Scotland) that we do actually have a face to face club. Our chess.com group has been active since 2008, the forum therein is littered with match reports from OTB league matches and some games.
Looking at the list of clubs (https://www.chess.com/news/view/participating-teams-1) i can see there are a large number of groups who are obviously the extension of an OTB club, some of those have created a new group for the purposes of this league. Some others seem to represent an association, federation or even a local league. To me, this does not seem to fit the definition of a club.
There are many others whose groups do not resemble an OTB in any way, mostly newly created for the purpose of competing in this league. It is this, combined with the fact that teams can invite virtually anyone they want to join their team, which makes this league just like all the other leagues that have been running on the site for many years. It literally is a free-for-all.
I have recommended to my club-mates that we don't bother with this league, it's not what was advertised. I await their decision.