he doesn't go to weird sites and then he says he uses Tor
Seriously weird sites are only accessible over Tor
Not saying he meant hidden services but he could have.1
Also, if you want to visit a very weird site on clearnet2, it's probably still better to use Tor than to not use Tor, especially if you're already targeted like whistle blowers. Or what would you recommend them to do?
But you shouldn't use Tor to browse normal sites, yes. That's leaving a too big footprint.

Footnotes

  1. giving him the benefit of the doubt
  2. I am not aware of any