Well currently name resolutions are not encrypted and I don't think it is technically possible to encrypt them, so we definitely aren't good. Asking everyone to route through a CDN is a bit impractical as well.

a good follow up article if you're interested: https://www.teamupturn.com/reports/2016/what-isps-can-see

Even a tiny bit of data(think DNS name resolution) collected over a long period of time can be pretty invasive to a persons privacy.