I don't believe in 'argumentum ab auctoritate'; we don't do that in science.
This reminded me of Feynman. 
Except that no merchant would consider a new not yet proven altcoin (one of 10,000) instead of 10+ years standing Bitcoin.
Hmm, I suddenly feel an association swinging around my head. Couldn't the same thing had been said for the hundreds of years standing fiat currencies back in 2009? I think this changes the subject; we currently examine the potential of a crypto. In other words: Its underlying technology. I also notice that this topic is not really any different than all of the other PoW vs PoS topic that we already had in the past in here; so maybe people like OP should use the search function and read / potentially 'resurrect' (if not too old) one of those threads instead of creating new ones all the time, with different wording but the same repeating arguments.