Per the National Park Service Website. You are allowed to carry a gun in national parks; but notably you’re not allowed to take it into government facilities: “government offices, visitor centers, ranger stations, fee collection buildings, and maintenance”. Additionally, it is not allowed to discharge the weapon unless you have specific hunting licenses.
I don’t know what bearing this has on this tragedy, if any, but to facilitate civil discussion it’s best to have a shared understanding of the law.
But Linux is open source? So if hypothetically so distro adopted spying al la windows couldn’t people just change distros? tbh I also think the question is slightly confusing as I don’t understand why OP thinks Mac OS is not standardized but I digress.