Whenever possible, if you watch on antenna TV not connected to any technology, it doesn’t show up in viewership numbers. You can also contribute to the cause by not buying anything from NFL advertisers when there’s a good alternative.
OR, if antenna TV isn't available, get the whole neighborhood together and watch just one cable feed -- which only counts as one viewer.
if you must have your football fix.....support local high school football. make the NFL look at the number of people at high school games and realize that there is nothing wrong with the game but everything wrong with the players and owners.