I would not agree with this statement when it comes to color correction or grading. My first jobs shooting GH5 10-bit footage under crappy hospital fluorescent lighting, showed a huge improvement when trying to correct color, especially for skin-tones. From this experience I would not want to go back to shooting 8-bit because of the better color 10-bit footage gives me. ( I've been playing with the GH5 V-LOG L ---> ARRI ALEXA color transform LUTs, and hope to soon try them on an actual job )
I must correct my previous statement. I did not mean that 10bit, IBIS and AF are just marketing things. Those are brilliant tools which makes life easier and bring better results without additional tools etc. BUT I meant that every new camera without 10 bit, IBIS or AF is usually doomed by some people only because it does not have those features even though camera is amazing. Look at GH5s.