I've done slightly more miles on a newer bike
Clutchless downshifting just feels nicer to me when I'm pushing the bike hard. Some folks don't like it, others haven't tried it for various reasons. Horses for courses.
You can smoothly change up from around 4k RPM, or rather, I can, on my bike. Usually only 2nd gear & above, but now & again 1st-2nd.