Crank weight is another topic entirely!
Many for and many against.
I’ve ridden light and stock weight cranks of the same basic bike before. My personal take on it, for a road bike, is that it’s different. Meaning, I think the pros and cons of each balance each other out, neither is outright better or worse, and it basically comes down to personal preference.
Steve obviously believes it makes a big difference however. It wouldn’t be any issue for him to have made heavier cranks if he wanted to. He was / is adamant that it makes a big difference to acceleration.
Personally, for my bike, I just like how a light crank feels, the motor feels far more lively. If I was building a cruiser or tourer, I’d probably go a different route.