That doesn't mean the community is amazing and wants to contribute! ...it means, that those features didn't exist, and someone had to do them (and yes, it's really great that they're all coming out open source, but it's not revolutionary)
Any language in that situation will have a strong initial growth as people port their favorite toys across.
I'd be much more interested to see the rate of change over-time, year by year.
Is it still growing? Is it slowing down now there are some mature frameworks?
That's interesting stuff. "Changing the face of open source?" --> selfimportantness gasbagging.