The “easy” Linux distributions (ie *ubuntu *=X, K, -, and other mutations) feel less geeky than the usual windowshack solutions, like this script.
It's also safer, much more reliable and faster. It matches with Houdini’s native colour scheme, thus the menubar at the top doesn’t feel like an interrogation lamp. In comparison customizing the other two OS feel extremely restrictive, but at least after decades of user requests macOS finally ships with an optional Dark Mode. In the System Settings we can also bind shortcuts to any UI actions like this. On Linux it’s easy to go fullscreen, the KDE environment offers it in the titlebar’s right click menu.
I highly recommend to use Linux for work, here is what I wrote for 3D Artist mag in a Houdini tips article: FULLSCREEN MODE Usually a work session in Houdini takes a while, so in most of the time we don’t need the interface elements of the operating system. The funny thing is that there are free and open source alternatives which are far ahead in terms of UI/UX.