It’s a basic value of our culture. No real practical use. Except for highly focused technical application. It’s a long legacy of quasi-worship, sanctioned and encouraged by the state. Serves to give legitimacy, and notice.
So, yes yip. Your observations of this fact, are noted. Wishing this was not the case. Is just that. Much like our military traditions. Wearing the uniform correctly; saluting smartly, etc. Has nothing to do with how straight you shoot.
Its just how its been done for centuries.