The velocity separation tends to be an old wives tale that is not rooted in fact. Changeups are a lot more nuanced pitches with deception of the delivery, location, movement, and spin all very important factors, additionally harder pitches are just harder to hit in general. Among changeups thrown at least 100 times this year, here are the leaders in swinging strike rate.
Griffin Jax 92.3 mph
Tarik Skubal 88.7 mph
Cole Ragans 84.7 mph
Paul Skenes 88.3 mph
Reese Olson 87.9 mph
Jeffrey Springs 79.9 mph
Luke Weaver 87.2 mph
Raisel Iglesias 88.7 mph
There is a diversity, but a lot of very hard changeups, many of them harder than Abel and Luzardo's for example Skubal who might have one of the best changeups in the game throws his fastball at 97.9 and change at 88.7 and Luzardo is 96.5 and 87.8. Now Luzardo's changeup is a plus or better pitch and Abel's is below average, but that isn't velocity related.