No, that was different. eIDAS is certificate based - those that care will just use a VPN to download a non-EU compliant browser build and only surf with the VPN on. At least that’s my plan.
Here in Spain there’s minimal surveillance outside the big cities. My town (circa 40K residents) has no public cameras in town (I lived in the UK and they were everywhere).
Personally, I’d expect it to be fine. There’s not a lot of CPU usage for those apps. The only part I see it potentially struggling is the file transfer (WiFi on the Zero W or Ethernet-over-USB).
Might be better to get a Pi 3b with Ethernet on board
Try Mojeek - https://mojeek.com/