I did not lose trust in you in just one video. In fact, I was not following RaiBlocks at all and didn't bother watching the video. I rather read the text beneath and felt "ah, good that I didn't buy and take that coin so seriously!". On the other side, I was looking your view on scalability a bit skeptical.

Scalability is really a big technical issue that needs to be addressed before everyone tries to deploy every possible app on the blockchain. I presume, 2018 will be a remarkable year that we start to see lots of blockchain based technologies. IoT enabled devices will amount for more than 60 billion in number by 2020, according to industrial forecasts. There would be more than one app per device (and also per human) that needs to be supported by blockchain. On top of that some apps like video streaming and gaming require quite intensive throughput, which makes scalability a paramount concern. Ethereum is doing well. Do we need other alternatives? Probably yes (or may be not).

Wishing you all the best!