No, it's a common sentiment Old Crone . The question is though, how reliably does that attitude result in success? And which kind of success?
In my response above I address structural sexism. That a woman or trans-woman with that attitude might not succeed, including for reasons they don't fully understand or even perceive at all. Opportunities just aren't made available to them that are made available to male peers, often subtly, socially, untraceably.
Further, they might not even recognise that they have not succeeded, because they are not aware of the opportunities they didn't know about. So, in terms of the 'field of play' they understood themselves to have operated within, they were successful. It's just that others were playing a different game, in a differently defined field of play. Mysteriously, it seems, some of those others ended up in rather wonderful positions.
Other posters have addressed the ways that female socialisation might affect the practical adoption and persistent pursuit of this attitude. Lack of personal and societal support and encouragement, plus expectations and pressure to focus on other, more socially useful or acceptable tasks.
Then there's an important point about how we perceive success, especially in retrospect. We tend to draw a line from where we started to where we are. To perceive an inevitability in all, or most of that line, which in fact is entirely retro-fitted. Really, a messy cobweb of possibility would better describe the routes we took, the choices made, opportunities offered, happenstance and luck that resulted in our moving from one point to another, while not travelling other routes.
Finally, this idea of someone telling you you cannot do something, of that point being made clearly enough that you are able to perceive a gauntlet being thrown down, is simplistic and somewhat solipsistic, in that it implies a level of interest in you by others, that generally does not exist.
Sure, you can see that certain A-levels, degree courses or career paths are less frequently taken by women and girls. But few people are going to taunt you with the impossibility of your following an 'old school tie', masonic, golf-club mafia or other restricted route to success that only persists because it is unspoken. Far less one based on sexism, prejudice, unacknowledged bias, the desire to employ 'people like us' and a 'face that fits', which may not even be recognised overtly by the people who apply it.
People do not know why they succeed and why they do not, in many instances. Or even what the potential parameters of success are. Therefore they are in no position to control how they might succeed; how can you win, when the terms of the game you are playing are not made clear to you?
So, had Robin been feminised from pre-puberty, life would have been different and most likely, according to the retrospective line drawn by middle-aged Robin, successful. But Robin would never have known how else that life and career path might have proceeded, or quite why it went in the direction it did.