I think you are both right.
on a cinema server or when djing in front of the audience, I would never take a wireless mouse. either the batteries are empty or the radio is disturbed ... at home that's different. I actually always have batteries. but I also have a wired keyboard and mouse (both usb and ps / 2) for diagnostic purposes. So if I'm running out of batteries, I have to plug a cable ...
i used to stand on the same point as jersens just what headphones and micros concerned. The sound was just worse, there was a latency and something was constantly disturbed. meanwhile it works but I still prefer to use cable in the audio section, but I can understand anyone who prefers to operate his bose dolby atmos home sound system rather than 8mm gold cable. otherwise you spend more money for cable than for the system ^ ^
so for the home area that is often ok, especially if you are on all these promotional keywords but in the professional field is nothing about cable or you spend a few thousand more on money...
But do not get me wrong ... I do not mean gold hdmi cables or golden fuses or such a nonsense.
https://www.ebay.de/itm/Cosmic-Audio-Lautsprecherkabel-Ref-X-2-fur-lange-Distanzen-2x5m-HighendKabel/123369444066?hash=item1cb96452e2:g:8JYAAOSwTuJYqp1N
if they sound better than 2.5mm standard cable, go to the doctor ;p