It might well be better, but who can afford to change out their entire fleet every time something new comes along? Nobody.
Even if you buy a bike/wheels with these new hubs, all your existing bikes still don't have them. Right?
It might be alright upgrading all the time if you only own one bike to swap out.
But if you are truly serious about cycling you probably have more than one bike anyway...
I was always on the forefront, getting the latest stuff all the time.
But right around 2013 I think it was I got fed up with the whole idea of bringing in new wheel sizes just for the sake of it. As you may know, I had a
rental bike fleet in Tenerife. And that's where I said "enough!". It's silly fitting 150cm riders to 29er bikes or even 27.5ers. It's a step backwards IMHO. People were even starting to turn their noses up at €2000 bikes that were only two years old!
I dodged a bullet with the ridiculous "integrated seatpost" frames that were coming onto the market around that time. Not so good for traveling and fitting them to different riders is it? Luckily that one didn't seem to catch on. Then the whole disc brakes on road bikes thing.
Then along came tubeless. I have a set of tubeless wheels which I haven't got many kilometres on, I've tried it but I don't think I like it. To much pfaffing about. I had to take a special trip to the service station in the car just to seat the tyre beads onto the rims!! Not very practical is it??
And I think that's how we become curmudgeons.
We slowly realise that newer isn't always "better". What we've already got is generally good enough.
I've actually kept my main bike that I do most of my riding on a 3x9 drivetrain.
I have other bikes that are 10 speed, 11 speed and even 12 speed.
I actually kinda like 9 speed as you can still build up your own cassettes and modify them a bit.
Cassettes are way cheaper.
I still like to buy new things all the time, but only if they fit my existing frames, the latest of which is from 2007.