No I'm not. I went to school. I got bullied by some children. Not all of course. But some children are just determined to be bullies, it seems. Or perhaps they aren't and it just happens. No doubt I ended up picking on one or two others in my time.
But to some extent this is the point. The argument you seem to be making is that these children, or children in general, wouldn't be victims of bullying if they decided to hide who they were from their classmates. Well, I may as well turn the question around: have you ever worked with children? Do you think that those who would bully others really wouldn't do so if they didn't have this excuse? Anything, any difference at all, and some people will pick on it. So the question is, what do you do about that? Do you tell would-be victims to hide, run, keep themselves safe by avoiding doing anything that might lead to bullying? Or, how's this for a thought, do you let children be themselves, and take bullying seriously by working to combat it when it happens?
The prevention strategy advocated by you and retro is massively counterproductive because while it might just save such children from bullying (although, as I have argued above, don't bet on that), it doesn't save them from themselves. On this I can speak from experience. If you hide who you are it is self-destructive. So, one has a choice. Destroy yourself, or let someone else have a go. In general, you are going to be more successful at it than they are.
The reason for that is that there are rather a lot more who are accepting of this than there are the sort of idiots who think it's appropriate to bully someone. Once you are open about who you are, you can find support from friends and family -- friends who, in this day and age, seem to stop caring. Oh, the bullies will always be there. But they are counterbalanced by the accepting. And, more importantly, because it is no longer just an internal struggle, you can hear the positive for the first time in your life.
So no. We absolutely shouldn't be passing out the message that the best thing to do is save yourself from bullying by hiding who you are. Hiding it from yourself, and hiding it from the world, is the absolute worst message imaginable.