Getting real tired of these „China is 30 years ahead of us“ clickbait headlines on an almost daily basis. They‘re always completely overblown and sadly really warp the public perception of the country and their government.
The “innovation” in the article is passive tech for fiber to the room (FTTR), specifically made to be low cost and easier to implement. It’s also how your computer might get that 50Gbit - it’ll have to be wired in with a fiber connection. It’s not happening over WiFi (or even Ethernet)
Technically, those 100+ Gbps fiber LAN/WAN connections used in data centers are also Ethernet, just not twisted pair.
That said recently I was in a retail store and saw "Cat8" cables for sale that advertised support for 40 Gbps copper ethernet! I wonder if any hardware to support that will ever be released. It is a real standard, approved way back in 2016: https://en.wikipedia.org/wiki/100_Gigabit_Ethernet#40GBASE-T
Those cables are hard to terminate properly. There's an outer grounding sheath that needs to be connected up at both ends. Except for short connections, I find it easier/cheaper to use fiber.
There is nothing preventing housing being built with it, so it's still viable, if currently drastic overkill. Most end-users wont have fiber cards in PCs to begin with, but that isn't insurmountable either.
Most residential fiber globally currently is GPON with a 1-2 Gbps shared line using passive optical splitters, split up to 32 ways. Raising that shared line to 50 Gbps is a great upgrade.
They're over here talking about 50Gb XGS-PON for residential like anyone is actually going to use it. I bet their end users will still complain about slow speeds.