You're the first person that I've seen who has good things to say about any CVT.
They are just better. More efficient use of power. Now, that is not to say that all of them hold up, or that they are "as fun", but they are the wave of the future just as sure as the DCT and paddleshifter has replaced the manual in Ferrari's...because it's better. Think about it...
Old drag cars (and still the fastest one's around) use 2-speed transmissions with unlocked tq converters with 5500+rpm stall speeds. Basically, if you ignore mechanics and look only at functionality, a CVT. That can handle the power.
Here is a video:
I especially like this video because you can see the tach on the left. Notice: That high-stall 2-speed PG acts JUST like a CVT, except a CVT is tons more efficient because instead of tq converter "elasticity", you're getting actual power delivery and the TRANSMISSION is what is creating the variable rpm vs. load to maximize acceleration due to the infinite (theoretically) ratios.
There is a reason that the fastest drag cars on the planet use a Powerglide and a huge stall. Keeps them in the powerband constantly.
Kindof like a CVT does a passenger car, albeit via different mechanism.
CVT is the wave of the future, once the kinks are worked out. I knew that the first time I ever drove one back in 2005 when the dealership I worked for took delivery of the first Ford CVT vehicles (not a CVT I'd buy...but the object lesson was what I meant).
Listen to this car as it goes down the track...that's the beast version, functionally, of a street-going CVT, even if the mechanics are all different, the end-goal is identical, and it is equally effective.
It is the nature of fuel powered engines to have RPM ranges with varying power and efficiency points. The closer you can come to keeping them in their "sweet spot", the better. The CVT does this better. So long as the CVT is durable and reliable, it cannot be beaten. This is slowly moving from "theory" to "reality", and the decades old Powerglide + huge stall converter is a simple case-study.