that is the point of the article. there are better platforms now. Ethereum is not in the tech lead, value will begin to slowly drop IMHO>
network effect destroys tech advantages every day of the week, even when it's an area as tech dependent as this.
there may well be better systems out there right now but the longer ethereum stays at the top the less likely people are to investigate other coins and the more willing they are to put up with ethereum's foibles.
there are loads of areas where an alternative is unquestionably better. that doesn't really matter if it never took off. that's not how it should be, but it is that way and it always will be.
the only question is whether the whole platform thing is early enough in the game for something to usurp ethereum. every day ethereum is ahead makes it less likely.