The truth is NBA viewership is plummeting. I feel many fans are growing weary with the poor quality and the tainted inaccuracy of the officiating. Replays show where fouls are being called and in reality, no contact was ever made! Each game is full of momentum-changing inaccurate calls. It's obvious that the refs have favorites and are being influenced by them. The league wants certain superstars in playoff games for the sake of mass viewership, no matter the loss in the integrity of the game.
Well, sorta-kinda-probably-not.
Regular season local ratings were down slightly due to big dips in a couple of the NBAs biggest markets -- NYK and CHI -- due to those teams sucking awful. Cleveland also saw a dip in ratings with the departure of Lebron.
Conversely, of course, LAL saw an increase in ratings with the arrival of Lebron -- highest ratings since 2013.
Many teams actually saw increases in local ratings but nationally, the statistical weight of the big markets up above dragged the national rating down.
https://www.sportsbusinessdaily.com/Journal/Issues/2019/04/29/Media/NBA-ratings.aspxThat was regular season and those are local-broadcast ratings.
Moving to the playoffs so far, ratings on nationally broadcast games are clearly up signficantly over last year:
ESPN and ABC’s coverage of the 2019 NBA Conference Semifinals is up 19 percent from last season in metered market ratings, according to Nielsen. Through five games, ESPN and ABC are averaging a 3.8 metered market rating.
https://deadline.com/2019/05/espn-abc-nba-conference-semifinals-ratings-up-19-percent-1202607441/I think overall, viewership isn't plummeting.
I don't disagree at all with your criticism of how the quality of the officiating ruins the product, though. My sig says it all.