That’s the beautiful thing. It doesn’t really matter if she’s actually Margot Robbie.
If she isn’t, she’s a person (probably - AI/ML systems are really good at tricking us these days) that posts generally amusing, positive, and pro-labor things.
If she is Margot Robbie, then, she’s a person that posts generally amusing, positive, and pro-labor things, while also having been publicly recognized as being skilled and talented at her day job.
Either way, it’s someone that I’m glad is active on Lemmy.