They've made them into black boxes even more, actually. I've checked with several manufacturers and most of the consumer grade routers are like this now: you can only access the router through a smartphone app through some cloud bullshit. You cannot access the router with a computer, there's no way to get into it. That's why it also requires an internet connection. You cannot set them up as an offline LAN because then the app won't connect through it because you can't access their cloud servers. It's a total regression of functionality because where you used to be able to access the router through any device connected to the router with a web browser, now you can only do it through a smartphone, and only through whatever remote bullshit they let you access it through. As soon as those servers go offline, your router is bricked.
A different company that tried to do this recently was Sonos. They make speakers that communicate over wifi instead of traditional stereo cables and similarly are only functional through an app. In the most brazen act I've yet seen from smart device manufacturers, one day they announced that they were releasing new speakers, and that service to old Sonos speakers would end in 5 months. Old devices would cease to function and could be put into 'recycling mode' (meaning, erase the firmware and brick all of your devices) and be traded in for a rebate on new speakers. They really thought they could get away with this. As it turns out it doesn't work to say "let's try to screw over literally every single customer we have simultaneously" and then they announced that old devices would continue to work, because shutting down old speakers was actually not necessary after all.
Sonos is a cautionary tale about any smart device you have whose functionality is tied to a server somewhere else. This will only happen more and more in the future. It didn't work for Sonos because they weren't big enough, but eventually, someone will get away with it. Routers are an especially obnoxious one because no one was asking for them to be 'smart' devices in the first place.