Responding to a court order, YouTube and its sister company, Google, will block viewers in the region from viewing videos of the song, “Glory to Hong Kong.”
With Invidious, it would have to block every single accessible instance for that to work. You can proxy the video through the instance to avoid censorship.
tbh, I know little about the capabilities of the Great Firewall. Maybe it already is possible to circumvent it with a VPN or an anonymity network like I2P or TOR. Also don't know if they block per IP or in blocks. Possibly hosting the peertube instance on public cloud infra would make it difficult to block if the IP changed at certain intervals.
Hosting peertube could however provide dissenters with more options than youtube.