GH Discussions is great when the question is closely tied to a particular repo. I don't see how it competes with SO for things like design patterns, algorithms,

GH Discussions is great when the question is closely tied to a particular repo. I don't see how it competes with SO for things like design patterns, algorithms, programming language usage, etc. I wonder how much of SO fits in the "particular repo" category? Not so much for my interests, but I imagine the chunk for popular web frameworks is huge.