I technically use a natural key, if you could call it that, when using Supabase. Having a `public.users` table with a primary key that’s the same as the key for

I technically use a natural key, if you could call it that, when using Supabase. Having a `public.users` table with a primary key that’s the same as the key for the internal user auth table (from Supabase). Arguably not a natural key, or at least a contrived example, but: any downsides?