The idea of drama is drama on a Blockland user usually in blockland servers. Exceptions have been made such as in blockland groups on steam, skype, teamspeak, discord, etc.
But if it's for something silly as being called a hacker, it's not usually worth the drama.
If it escalates further to being called a hacker (Like say, they then start stalking you onto other servers and continue giving you a bad rep), then drama is a valid option.
In this case, we've no idea if this guy even is a blockland user and even so being called a hacker is like someone coming up to you and giving you a pinch. It's not worth the drama.