"did get screwed because somebody at the show production thought viewer rating is more important than filtering out entrepreneurs with bad intentions before being asked to put their reputation on line by announcing investments on national television"
Listen - you have to take 'Shark Tank' with a little bit of 'Trumpiness'.
It's entertainment man.
The companies are chosen at least as much for their entertainment value as anything else.
Mark Cuban is not concerned about his 'reputation as a serious investor'. In fact, he's probably a joke in serious investment circles.
Mark is a 'pop culture' investor, he cultivates an image of what 'joe street' thinks a 'business investor' ought to be. Obviously - he is that to a great extent, he's putting real money on the line, but he's not a VC in the the more orthodox sense.
He'll have his team do due diligence after the fact, and do a no/go later on.
All of the ridiculous fights, 'isms' and 'sayings' etc. - they are like 'Trump tweets' - you think it will damage him, it won't. It's pop culture ... where having the eye-balls matter. He has legions of 'at home followers' who look up to him. That's his audience.
He might lose an inch of cred with people like you and I, but gain at least as much back from of the kinds of people that watch this show.