We don't because we aren't millionaire musicians.
You ever seen the stalker that targeted Bjork or some of the unhinged superfan people in South Korea who stalk down KPOP members?
There's some weird people out there man. I think if you are that famous then yes you kind of do need armed guards like that.
Especially with some of the frothing at the mouth MAGA folks out there who some of them think she's like a plant or deep state propagandist or some other weird shit I only saw it in passing on some Facebook posts by those people.