Sky is not falling
When I read the article, I got the mistaken impression that the major Linux distros are dropping support for all 32-bit architectures including ARM.
It was quite a relief to read the referenced post and learn that it's only Ubuntu dropping the i386 architecture.
Ubuntu desktop seems largely to target Windows converts, so I suspect this is really not a big deal.
The headline certainly caught my attention, though. And that's the purpose of a headline, right?
P.S. Of course there's RPi and CentOS and Gentoo and the BSDs, but those don't have qute the same...culture...as Ubuntu.