Not with that attitude.
Remember when you had to get your friends and family to use Facebook? I do. Most (may be all) social media platforms are opt in. People are not born with a Facebook account.
This is not a reason, but rather a means to absolve yourself from engaging with a platform you know is toxic.
I actually dont think testing this hypothesis is as easy as you think. You can’t just control for social biases when analyzing marathon data because these social biases are longitudinal. At a young age, women quickly learn from modern society that they are physically inferior to men. Because of this, the best bet for testing this hypothesis is to look at ancient societies, because these societies are largely independent from our modern society.