……preseason + reg season = 20. I can almost guarantee that the number will drop by a commensurate number of preseason games.
Why? The preseason take goes entirely to owners. The players get a cut of reg season games in contracts and NFLPA.
Owners like the meaningless preseason games to make their hay(it is why the exist).
It is still not wise due to injury risk IMO, but that is the premise that the owners and players have been dancing around for years.