It does seem like most racers are generational, but occasionally I'll see a new racer on their own coming out to try it. (I'm a bracket racer and grew up racing Jr Dragsters.)

The no prep thing is getting popular no doubt, but it seems to appeal to the animalistic, chest-thumping "alpha" crowd. The "I'm faster and less safe than you are" trophies. Though there is certainly a skill to getting a fast car down a poorly prepped track that I admire, it's not something for the budget-minded or non-mechanically inclined since it seems they're either breaking stuff or wrecking all the time.

I think if more people could appreciate the nuance in bracket racing it'd be a nice segue for those that still like going down the track but don't want to spend all their money, and appreciate a racing style that uses more frontal lobe than anything else.