A friend of mine reshared that post on G+ yesterday and I left this comment there:

"nymwars" is a big complicated thing that has far outgrown my ability to keep track of the nuances, so I don't understand what this means for my personal pet feature (showing different names to different people), but it's encouraging to hear that there is raucous debate inside Google.

I still think that the strongest argument for pseudonyms is that a system that doesn't handle them is Wrong, in the same way that "everything can be losslessly converted to ASCII" is wrong, or "an accurate map of a geographical area can be drawn on a flat surface" is wrong. Pseudonyms aren't a feature you can decide whether to support or not, they're part of the problem that you're trying to solve.