I'll point out a couple of things.
First, at the time of its writing do you agree that the Second Amendment protected the right to carry openly, given that the vast majority of citizens would have owned long guns?
Second, by suggesting that concealed carry, which is a relatively recently supported practice, is MORE justified, aren't you suggesting that we can simply consider the nation's present needs in order to determine what the Constitution means?
This way of thinking is destroying our nation despite the Founders attempt to secure our liberties.
I reversed my position earlier. As a couple of people pointed out, when the second came about, it was not really possible to carry concealed. Just as nobody saw the need to explicitly say that marriage was between a man and a woman, for obvious reasons, it didn’t need to explicitly say you could carry without hiding. Sadly, we know how the former worked out.