I write about cryptos and the stock market, so this was a nice read! I agree with you on most points, on the dividend side though. Many cryptocurrencies have ways of giving investors a dividend such as NEO for example. They give you GAS (a different token) as long as you stake NEO. This is a form of dividend. But you of course right that the major ones excpet NEO doesn't have a dividend.
Ethereum for example, when they switch to Casper stakers will be rewarded, this can probably be looked at as a dividend as well I think. Good post!