I don't think Oracle by itself is a problem, but the article says nothing why we should use that technology, hiding a link to the site deep in the article.
So according to Oracle's site it's just another Universal Toolkit for web & hybrid mobile.
And the problem is... they're late for this game. While technology might be OK, it will never enjoy decent adoption by community.
This is not mainly a technological point of view, more a social and cultural. Dig in the history and you'll see that Oracle is an economic sociopath.
There are many posts around the internet from ex employes, alone on HN.
https://news.ycombinator.com/item?id=11230532
Just start digging.