jTox, cyanide, and numerous options left available through Alien Dalvik. Why does a (very) specific and narrow use case equate to a platform being "pathetic"? There are bugs and quirks, sure, but it's literally the only reasonable alternative when it comes to modern mobile OSes, especially for devices where telephony is a priority. Tizen and Ubuntu Touch were trash out of the gate. If there's a better example than Sailfish on the Xperia X, especially in the realm of officially supported reasonably modern hardware running a reasonably modern Linux kernel, I'd be all ears.