Onion messages seem to be a concern, as well as the scope of the required supporting features. There has been activity on the issue recently though, and you can find a roadmap here:

https://github.com/lightningnetwork/lnd/issues/5594#issuecomment-1453908298

Keep in mind that the project is open source so you can contribute if you feel that a private business is not working hard enough on the features you want.