Shows need advertisers. So they need ratings. So they need guys who are interesting and opinionated enough to drive the ratings.
I used to get upset when the political media types (Rush, etc.) or NFL media types (like this guy) said dumb things on the TV and radio.
But I've accepted the fact that it's just entertainment. People with no strong opinions, or moderate opinions, don't make for good entertainment. Strong opinions - even when not entirely supported by the facts - are just more interesting.
The political commentators still irritate me because they actually sway voters with their stupid, unfounded opinions and misrepresentation of facts. The NFL commentators don't bother me at all because they have no impact on what's going to happen on the field the next Sunday.