No, that thing is unusable. It has no niceties to help a user do basic things. The best OS I’ve found that has enough GUI tools to do stuff, is Q4OS. Uses 350 MB of RAM, but it has enough stuff to get you going. I looked more into FunOS btw, and it requires quite some terminal work to even get tap-to-click to work. It’s missing some GUI tools for basic things. It doesn’t even save screen resolution changes without editing X11 files. If they get these things implemented, then sure. Same goes for all the other lite OSes, like AntiX, DSL, etc. Lightweight, yes. But not really usable by an ordinary user. They are missing GUI tools, of if they have them (like in the case of antix and puppy), they are a complete and utter MESS. I’ve used all of them, and they have left me very, very underwhelmed. Until then, Q4OS is the best of the lightweight distros. It’s well put together.
Not nearly as low in memory usage. Xubuntu requires 1.1 GB of RAM on a clean boot for example. Lubuntu close to 700 I think.