I tend to agree with you, it will happens. But Python is loosing mindshare right now, won't it be too late if we wait to get to the point where both Pypy consume less memory and device have enough memory ? I think that's the point of the article is what can be done now to not be late on the bandwagon and surf on latest trends. We are somewhat talking about platform marketing here, I think.
The latest-trend-kids will always be doing their thing. Python will never be as hot to them as when it was new. It isn't really a problem. It is possible that NodeJS, Golang never reach the popularity that Python gained in the first place, because the cool kids will jump the bandwagon again and again for something hotter and newer. It's not where the real work is happening, they're just the loudest.
I see more people around me learning Python every day, because it is a useful language to get stuff done, has excellent bindings for almost every other library, and is pretty stable (ie, the language has been about the same for a long time).
