I've read a lot of her posts and generally, they are great. I don't think Steem will be ruined as easily as Facebook. The problem with Facebook is it is barely customizable, so either you take it or leave it. Perhaps more so than blockchain, the rise of open source and even Android/Linux as an alternative to Windows and AppleOS did a lot for the PC and other devices. Block chain will all it to happen even more so because things that need to be accounted for and protected will be safe even if it looks wildly different.
Actually, one of my interests is a small crypto project called Quantstamp and they are looking into smart contact security. The stuff is way beyond me, but these types of contracts will definitely become more and more popular.