My parents are completely tech illiterate. But they are also afraid of this tracking and becoming much more aware of this power. So they ask me to set up their browsers to do so. I don't go full in, but basic stuff. There are still little hiccups but even they are happier to have small hiccups than be tracked. They see it as a fair trade-off. I think this attitude is common non-technical users.

Tldr: I fully support security by default.