You are using that position to defend unisex bathrooms. That's like saying "kids threaten each other all the time, so obviously gun/knife laws aren't stopping kids from problems, so let's let them buy them at any age they want". Your anecdote is not only morally reprehensible, but wrong. You are also wrong in that not all kids are raised that way, or exposed to such, so it is no longer empirical. Even so, whether or not a child knows what sex is does not suddenly make them protected from a sex crime, which was the core argument of protection. Don't confuse this with knowing what genitalia or sex is, because that's not what anyone here besides you are saying.
You have no idea what or what I wasn't raised with, but feel free to make assumptions. Note that it doesn't make your argument stronger. I also did not personally attack you in that reply, nor have I in "every post". Just because you got called out, you don't have to be dramatic.
Now answer the second part about how I have never seen a penis in a bathroom besides my own.
The core of my first argument is that because access is so easy for children and is GOING to happen some time at a very young age the fact that they might happen to see it in a bathroom is a non-issue. Unless you are also advocating for laws restricting all sex exposure for children unisex bathrooms are a non issue. Your argument is closer to eliminating knifes from kitchens because they will teach violence but still allowing violence on television to go unabated.