But I don’t think it’s necessary to go that far. Even a budget DSLR that is perfectly capable of shooting raw should have great auto white balance: Most people don’t want to endlessly tweak photos. Better auto white balance means better photos, even if theoretically everything could be fixed in post.
Oh, and just because smartphone cameras are nowhere near as good as DSLRs doesn’t mean it’s not meaningful to compare them with each other, doesn’t mean one can’t be much better than another one.