As with Jon Postel's maxim (https://en.wikipedia.org/wiki/Robustness_principle) people have also subsequently applied this to human behavior, not just the behavior of particular software.
There were ultimately more technically sophisticated means of censorship available on Usenet that were somewhat more effective.
Platforms which do not heavily moderate content will nonetheless still have heavily self-censored content as a result of users being conditioned by other platforms into self-censorship.
My workaround was to tunnel via my own VPS in Singapore, as I could connect to it and but I was using OpenVPN back then and performance was pretty terrible. (Now if I want such tunnelling I use WireGuard, and it’s much better.)
But, even if your traffic was going east, with the broken cable to the east, there might be a lot more traffic going east (or coming from the east), and that could cause a lot of breakage.
For better or worse (mostly for worse), BGP doesn't propagate capacity of links, so it doesn't matter if there are alternate routes, if the overloaded route has the most desirable advertisement, it gets the traffic even if most of the packets are dropped into the sea.