People have been saying this for 20 years now. But try writing basic search queries. Ubuntu/Gnome's builtin search engine (Tracker) for god knows what reason u

People have been saying this for 20 years now. But try writing basic search queries. Ubuntu/Gnome's builtin search engine (Tracker) for god knows what reason uses RDF/SPARQL and anyone who wants can run "tracker sparql <query>" from the command line or their app/library/tool to query all kinds of things on their system. Its been around for a long long time but count how many people/projects use it.