Let’s just say that sometimes that rule is violated when exercising in the public space. I have seen that multiple times and talked to some soldiers that confirmed that civilians sometimes unknowingly are part of an exercise, although you would never fire on them.

Those are also symptoms of depression. Either way, If you regularly feel that way, try to talk to a doctor or support groups to try to get help.

Flying out of sight only underlines the illegality of the act. In Germany you need to keep relatively near to your drone and technically need to be able to fly by sight only (so can’t stand in a building/car and then not see your drone).