That's "useful" when you can effectively only use it for Baidu, rednote, TikTok (the local version that's isolated from the rest of the world) and WeChat
The current maximum speed per single-mode single-core fiber (aka, the typical FTTH ones), is on the order of 400,000,000Mbps, or 400,000Mbps per channel. Not much leapfrogging there.