Any script kiddie can DOS a residential connection for however long they like. It's a common "attack" people do in games that leak IP's.

The culture of internet celebrities is growing significantly with twitch/YouTube streaming. People are dangerous, and will harass and stalk.

Swatting is also still very real, it's a common occurrence for major content creators.

Yes you should do more, a good VPN is essential if you interact with other people online.