Over the past day, some users could not get certain big websites to load when VPN by Google (on the Pixel 7-8a) or the soon-to-be-deprecated VPN by Google One was enabled. In the latter case, the issue applied to all form factors (Android, iOS, Mac, and PC).
Apparently, disabling the VPN fixes the issue. I wasn’t able to replicate this issue on the Google One VPN, nor the Pixel VPN as my Pixel 6 does not support the new “app” for some probably stupid reason.