We have been hearing about the demise of tubes since the transistor arrived. The same with CDs versus LPs. The synthesizer replacing live musicians. Now computer animation replacing live actors. Digital cameras replacing film. I am still waiting for all these things to be clearly better. Still not there yet in any area. "No need for expensive cables"?? Well, if the cheap cables used are slow, then the timing of the digital signal will be off and there goes the good sound.
Even PCs making mainframes computers obsolete. The internet would not work if it was built on a PC platform. Mainframes still rule for serious applications. I am still waiting.