> For spreading DNS providers, would randomly routing to different ones be more or less private than rotating providers every X minutes.
Less private for the simple fact that now you'd have to rely on multiple upstream resolvers to respect your privacy. Stick to one; ideally the one with better privacy guarantees like the Mozilla endpoints to Cloudflare DNS.
Or, use anonymizing protocols like Oblivious DNS over HTTP and DNSCrypt v3.
> For spreading DNS providers, would randomly routing to different ones be more or less private than rotating providers every X minutes.
Less private for the simple fact that now you'd have to rely on multiple upstream resolvers to respect your privacy. Stick to one; ideally the one with better privacy guarantees like the Mozilla endpoints to Cloudflare DNS.
Or, use anonymizing protocols like Oblivious DNS over HTTP and DNSCrypt v3.