With many other providers I can make deductions about likely threat scenarios. For example I know about both my ISP and about Google that it is in their best interest to serve me correct DNS entries: they have no obvious motive to do otherwise. On the other hand I can be fairly certain that my DNS queries will be fed into Google's database if I use their DNS: they have an obvious motive, have the capability and no obvious disincentive. Etc.

With some new, unknown service with unknown associations I can't reason much about the threat model.