Cannot avoid geoblocks with Wireguard?

Not long ago, Proton had a news blog or email I cannot find that said ProtonVPN had now expanded support for watching streaming services and content like Disney+, NRK etc in Norway, and I see this support article up: https://protonvpn.com/support/watch-nrk-with-vpn/

I always use Proton through WireGuard instead of through the official app since I use a custom DNS setup to avoid ads etc.

Do you need to be on Protons app / DNS to get streaming to work?

I wish Proton allowed for custom DNS in their iOS app and I wish they said something about streaming services and geo blocks in the app.