There are two types of people - those that just want dns to work at all so they can get stuff done, and those who have working dns but want to 'upgrade' for privacy/filtering reasons.
5.4.0.0/14 (so 5.5.5.5) is Telefonica Germany. Same thing there.
Mercedes owns 53.0.0.0/8 which feels like a nice number for DNS too.
It's the "anycast" mapping of the IP to geographically and network diverse hosts to connect the user to the "closest" (for some value of latency that stays within the data governance jurisdiction).
To do this, you basically have to own a large enough IP block that backbones will deal with it, and route map it.
And anyway, I trust a random French small company more than I trust Google.
Google has a reputation to uphold, so while you can be certain they'll be datamining the shit out of your requests they are also unlikely to be direct malicious actors.