None of that really matters, Daxestablished through dialogue that the TOS look was basically a design trend of that time period, which is something that is backed up by Paris controlling the Delta Flyer over in Voyager using 50s B-movie style controls. The basic set-up of Trekhasnt changed from TOS right through, even if the styling of stuff changed with the times. There's simply no 'looks more advanced' as an argument, when you can build a computer keyboard that looks like its from the eighteenth century now, and still have it be functionally the same. TOS era tech came in black leather and silver, TNG era favoured grey, white and beige ceramics and polymers in appearance. It's not a knickers in a twist scenario. If the DSC Tricorders are all wrist mounted transparent Perspex, it really won't go against that established precedent.
Except the fact that those very elements were in abundance ten years prior to TOS, in "The Cage".