Its true that BEP0042 is an improvement, but another big issue is the lack of holepunching capabilities.

Woth HyperDHT, every node in the network participates in helping with distributed holepunching to establish e2e encrypted direct connections between peers, even if they live on phones or end user laptops etc...

This allows apps run by end users to participate and is a vital feature.

It is why the keet messenger works.