“You can't be a good marketer without being on social media”

“You can’t be a good marketer if you’re not on social media. You need to know what goes on in the world.”
I’ve heard something like this a couple of times, and it doesn’t make sense whatsoever.
Do you have to be on social media at all in order to be a good marketer? It depends.
It depends if you choose to play that game.
I’m not just picking on social media, this applies to anything where people say you can’t be X if you’re not on Y.
It’s a choice. When you start a business or a project or start a career you build your own game. So you get to decide what kind of game and rules you want.
It’s your choice. And life gets better when you no longer depend of third parties’ rules.