Ryan X Charles and his cofounder Clemens perhaps are among the top ten to top fifty real life coder programmer that are using, coding, testing, blockchain systems, blockchain solutions in real life situations.
They tested implementation within their platform Yours. Where most would eager to make another coin, another ico. They were self funded and driven.
They tried for over a year and a half, then switched to Litecoin before realising there are still basic fee structure that can't be solved thus moved on to Bitcoin Cash.
Three almost hour long videos featuring Ryan including this video will fully make you understand the true facts and real life coding difficulties. The other videos are featured in The Crypto Show.