At 30 you aren't the adult supervision hire, you're the guy the adult supervision hire brings on as a lieutenant.
Having said that, I've seen teams of fresh grads and bootcamp trained devs, where some 30 year old adult supervision might have saved projects or companies from expensive or existential disasters. "No, we are NOT going to build this critical project's frontend on the JavaScript framework you and two of your bootcamp buddies spent the last 4 weekends writing."
More than anything I think the OP just needs a change of atmosphere and even as an IC with technical management or a middle people manager somewhere stable he’ll have an interesting time with a very different environment.