I had a friend in high school whose parents bought him a Mitsubishi Starion, a turbocharged coupe of the era. Was a seriously fast car for the time. And you know what? He never crashed it.
It really does depend. The reason why inline 4s on bikes (or turbo 4s in cars) aren’t recommended for beginnners is because a lot of people tend to get in a lot of trouble with them. But some don’t….there are always exceptions, and you may well be one of them. Only you’ll know for sure.
My best argument for starting small is that in Europe, you don’t just get a motorcycle license and then go buy whatever you want. You get a graduated license…at first, you can only ride 250s (!). Once you’ve put in the requisite amount of time, you can apply to get licenses for successively more powerful bikes, eventually getting an unlimited license.
In my BRC, there was a guy from Spain, newly arrived in the states. Due to our in this case totally idiotic laws, they wouldn’t accept his full European motorcycle license, so he was taking the BRC to get it.
He was, for lack of a better term, flawless. He got a perfect score on the riding test, and frequently outperformed the instructors in the exercises. The instructors were suitably impressed, and when I left were still trying to get him to apply to become a MSF instructor.