I think yo-yo will grow in the same way Kendama did.
Fidget Spinners had the stink of fad all over them from the moment I saw them. Their subsequent fade into obscurity was, in my view, inevitable. However, given the long history of the yoyo, and the vast play/trick space it has, it is unsurprising to me that it has settled into a perpetual cycle of waxing and waning popularity without ever disappearing completely.
Also, I’m not the least bit surprised that unresponsive play has done little to shift yoyo popularity into high gear among the masses. It requires a level of dedication to learning and practice that is beyond most casual throwers.
A boom is not happening folks. Stop hoping for one.
And that’s ok. It’s not a problem. Gradual increase in popularity is what we want. I’m not sure if that will happen either though.
It takes a lot of skill and commitment. At the very best, I doubt it will ever be more popular than something like skateboarding. And even that amount of popularity is very wishful thinking.
I can imagine the existence unresponsive play being a barrier to entry for some casual would be yo-yoers. It complicates the field for entry. Some will start with an unresponsive because they hear that’s the best, and get frustrated and quit. I don’t think this affects those destined to be serious players, but it might hurt the casual fan-base. Just a though.