Why are the non-battery items considered disposable? Suppose everything could be considered a throwaway item if you’re rich and don’t really care but as for me, I still have and use burners and cameras.
I use the burner to load software on computers as well as update my touch-screen arcade game. Every now and then I use it to help friends put videos on DVD. VHS tape is obsolete but many people still have sentimental videos on those tapes and they should be digitized as soon as possible before something happens to the tape to degrade the quality more.
The SLR Camera I have is a Canon 1dx and I have a ton of lenses for it including a 300mm f2.8. There is no smartphone on the market that can capture a photo with the same quality as that camera.