You're allowed to have interests outside of your job, but most workplaces expect you to leave them aside, and focus on doing WORK at work.

If your job involves being a public speaker, who is 'on' 24/7, then that's what you have to deal with. You're always free to pursue flipping burgers, or fixing cars, where you only need to be focused on work for 40 hours a week.

The problem is we are rapidly heading towards a world where all of us are 'on', public-facing or not.

Remember this wonderful bout of collective insanity: https://reason.com/2017/04/18/drupal-developer-ousted-over-k...

Maybe once it was only leaders, but I think these days anybody can be harassed via their employer for saying controversial things on the Internet. I guess free speech still exists in non-controversial matters, and for people who don't have to worry about employment.