No, not good, but it does sell. And not just in sports.
Politics is far more trash talking then even pro-wrestling, at least around election time.
The news is always full of negatives, sensationalized if possible.
Action hero's are now pretty, well, bad. 24 comes to mind, The shield as well.
There is even that terror alert thing coming out of the White House, the one that never drops to the low levels cause that wouldn't be good business. Yet we still got a higher chance of being struck by lightning then killed in a terrorist attack (in North America, not in Iraq)
And let's not forget the tradtional styles, there is a lot of trash talking there. MMA fighters often get along fine after the fight and sometimes even admit to just putting on a show. But the archives on every martial arts site shows tons of infighting in just about every style. Who's the rightful inheritor and such nonsense.
In MMA it's not that bad, fighters are generally respectful towards each other after the fight, there are exceptions of course, but most of the time. But, they know what puts food on there table, and part of that is getting people to want to see there fights, and that means creating drama around it.