They do it all the time. They make up stuff that makes them feel more connected to the characters they’re playing. I mean this one says one actor says “I think it’s this way.” And the other one says, “Yeah that sounds cool, I think it’s like that too.” They didn’t claim anything canon about the show.
It’s like the actress in season one who saw her character as this big super feminist character but there wasn’t anyone like that in the season. Maybe little things here and there but nothing that stood out. I don’t even remember which actress it was because no one stood out like that in season one.