[Cthulhu_]

Your comment is unnecessarily snide / cynical; you should be aware that the Polymer team is the main driver of the Custom Elements committee. Polymer 2 is now a framework on top of the Custom Elements standard they helped develop and flesh out with Polymer 1.

[dmitriid]

Your comment basically reads like "Polymer team made sure the API is horrible so that everyone would flock to Polymer when looking for better/saner ways to deal with WebComponents"