Someone COULD go to the store, grab a hammer, and smash my computer. It's a different type of situation however when someone has figured out what model of hammer they would want, from which store (and if it is in stock or not), how they would pay for it, and who they would call to do all these things in a way that I couldn't figure out who ordered or paid for it, to smash my particular workstation at my home on a specific desk tomorrow at 6am - if they wanted to.
It's important to keep in mind capabilities, inclinations, and consequences - when that person with that plan is playing against me in competitive gaming the next day, I need that workstation to win, and I just bet them $10k I could beat them in front of all of my friends.
Thankfully most of us don't have to deal with this in our daily lives, but we can still be collateral damage when someone else is playing these kinds of games. And nation states do on the regular.
Remember Oklahoma city bombing. It's trivial to do for a couple guys, never mind anyone more organized.