However, this thesis seems mostly sensible. I think the crucial answer is that the "Skillz" of Batman are attainable, and there is a reasonable proportion of people in the world with potential to attain them, BUT the problem of being Batman is not in the technology.
The problem, as highlighted, is that there is no role for Batman in our current society. Vigilantism is frowned on, and, practically speaking, having a secret alter ego that lasts only happens in the movies.
But the real problem is that Batman exists to solve a problem; Gotham has a massive crime problem, way beyond what we see in any major city in the world. And it is a city where number of crime bosses, criminal geniuses and psychopaths exist, and where they can act fairly freely.
Given a real life city with that setup, yes, Batman would stand a better chance.