Whether there actually are too many games or not, I disagree with the idea that shaving off 15 or so games from the season would make it any more appealing. Why? Because the NBA has played 82-game seasons since the 1960s (in the mid-60s it increased from 80 to 81 to 82 in consecutive years). Did anyone think the NBA was too boring from the 1980s-early 2000s because there were too many games? Not to my recollection.
If the game is boring, it's going to be boring regardless of how many games the season is - and if it were dropped to 60 games give it a decade and people will complain that 60 games is too many. Why? Because you effectively slapped a Band-Aid on cancer instead of fixing the root issues with the game - such as metrics driving offenses to be only 3-pt shots or dunks, to, since the late 2000s, the assembly of super teams via free agency. I don't even know how you begin fixing those issues, but those are among the issues that need to be fixed.