Yep, would have to agree.The likes of Frank etc are a bigger risk because it is one thing managing clubs with minimal expectation and managing us. Look at the difficulty players have and magnify it, do any such move would be risky in my opinion.
Not only that but when people point to the likes of Frank / Potter / De Zerbi etc those clubs are also very well run and getting excellent value off the players the scout & sign. They also have a playing philosophy which means it's easier to slot similar type managers into place when one leaves.
Outside of well run systems like those (which we definitely dont have) I think it's a massive risk taking on those specific managers who may well struggle to replicate their success.