How is NKN different from, like, the internet? Nothing on the homepage tells me why there is a blockchain involved. Nothing it talks about cannot be done with TCP/TLS/etc etc.

If it's a p2p framework then something like libp2p, holochain, or p2panda would be much more appropriate than a blockchain with "incentivized miners" (incentivized to do what??).

I think the reason people are reinventing the wheel is because blockchain tech has extremely limited use-cases and all the people who tried (or are trying) to use it outside of its applicable domain are misguided, prompting further exploration into the p2p space that isn't tethered (no pun intended) to a global state that has to be shared by every node in the system which is an inherently unscalable solution for anything beyond a handful of performant nodes (ie, sharing transactions between banks or something).