When evaluating the bugginess of Flash on Linux, consider that Adobe was releasing a single libflashplayer.so with binary compatibility for a variety of Linux distros compiled with different versions of gcc, with different library versions, ALSA or OSS audio APIs, buggy OpenGL drivers, and NPAPIs for multiple versions of Firefox and Chrome browsers. And the Flash Player codebase dates back to FutureSplash circa 1993-1995. Developing "consumer" software for Linux is a challenging (and expensive) proposition.