All nonsense - of course you can run Ubuntu on Pi!
There is Ubuntu 14.4.2, compiled for armhf (for the Pi 2, at least). You can write it to your SD card using Apple Pi-Baker for Mac (go find your own, Windows users!).
It instantly loads to the login page (ubuntu, ubuntu being the default user and password).
You can upgrade that image to at least Ubuntu 15.04, if you wish.
That is all for Ubuntu server, of course. If you want Ubuntu desktop, try the Mate image, currently compiled up to Ubuntu 15.10.
In closing, the ENTIRE point of Ubuntu Snappy is to standardise and simplify installations specifically excluding tools like apt-get.