This is surprising, the oem whitebox routers are constantly OOS on aliexpress. People use them for PFSense or OPNsense. I would expect the same to happen with innexpensive NAS hardware. Lots of people want a DIY NAS but don't want to deal with big boxes and high power usage.
NAS are a product space that need more players. The best thing would be the ability to install your own OS. I have zero trust for these chinese OEM but they can make affordable hardware.
Amd is also on its way to make a similar platform, a low power and a more powerful one with a huge GPU and NPU of over 50 tops. Mobile computing is looking great.
I have been on 3Gb fiber with Bell here in Canada for almost 2 years, I just upgraded to 8GB for no reason at all (10$ a month more lol). I still just have a 2.5gb connection to my router but watever, 10Gb home networking is not superflous when you download 60 Gb movies.
My local ISP have been offering 1.5/1Gb for years now, 3/3Gb is the new standsrd and they provide a modem/router that have one 10Gb port.
If I were to buy a ""premium"" home router from asus, I would expect all lan ports to be 2.5Gb, not just one.