Dabo Swinney had no HC experience either when Clemson gave him the job. He was a WR coach who was the interim coach and it worked out.
I see where you’re coming from but I think fans put too much emphasis on HC experience. The best coaches are often unknown commodities and are hired without fanfare or hype.
Bob Stoops had no HC experience when he was hired by OU in 1999 when the Sooners were as bad as Nebraska is now. They had spent a decade being irrelevant and were really, really bad. Stoops was the DC at Florida. And this was after OU went the proven HC route with Schnellenberger, who had won a natty.
My point is, you never know. Like in any business, it’s good to hire someone with a lot of experience, but it’s still a crapshoot. Sometimes the best answer is the one you haven’t considered.