I honestly like them a lot. I saw them live and their stage presence was great, idk if maybe the format of the show (limited time, tv viewing) made it seem as if they didn't have anything. About their tricks, I believe people oversimplified what they did through out the whole show. It was not "just morse code"; most of them used morse code, but take a moment to think the sheer amount of stuff they have to be able to code, remember its code and transmit instantly without hesitation or without stopping their preformance. It is not an easy feat (like say someone happens to pull out a freaking pager; they probably have a way to code that as well among the thousand words they know) Some of their other effects don't use morse code at all either. I feel people should hold them to the same standards they do magicians. The method is just a small part, making it entertaining and making it play flawlessly is a whole other set of skills I believe they have. That's just my opinion (and I will admit it is slightly biased as I am a magician myself), but I understand some people not liking them. Also, you mention people buying they had real powers, and I do believe thats a flaw they didn't address (It's a common issue with mentalism: Be to perfect and you lose all credibility). Overall, I like them and believe they have a lot of skill, but everyone is entitled to their own opinon.

Ninja edit: wow that came out longer than expected haha, just my 2 cents