With digital, you can get more information into the tach itself(like turn by turn directions with Apple CarPlay for example). It's not just for 'looks'. Audi has the best system IMO for this. Go look at Audi's 'virtual cockpit' and tell me it isn't better than using standard mechanical gauges. It's not about not fixing what isn't broke, it's called innovating/improving on what's already there. I get that you don't give a crap about this but guess what? Other people do and it helps sell cars. There is a reason why Mercedes, BMW, Audi, Lexus, etc...all use digital gauges or are in the process of transitioning to them.
Of course when Mazda doesn't offer them, it's because 'people don't need them'. How convenient. Same thing goes with the turbo motor in the CRV. People here bashed it because of it's perceived unreliability issues with excess heat, carbon buildup, etc...but of course if Mazda used a turbo in lets say a CX-5/CX-9 it's not an issue anymore right? Right.
Getting back to the point, I don't really see why any existing CX-5 owner should upgrade, sure its more quiet, and has updated styling(both exterior and interior) and a few extra features, but it's still using the same motor, transmission, and platform. Not to mention it's heavier, slower, gets worse gas milage and handling.