As for Parker, I am suspicious of her separately from this situation. I don't think that her being college teammates with someone means she is doping because he was. When I was in college I was friends with my teammates, but I had no idea what they were off doing. I guess it's possible they could have been doping under my nose. I was too busy in classes, with other friends, to know or care.
It's not like a pro group where everyone is so much more in each other's business and everyone is running for job.
But I do thin outlier behavior is weird. If someone is running record times into their late thirties and forties, that's weird. If someone is running multiple distance events at the Olympics and medals in all of them, that's weird. If someone took five full years off after having a relatively mediocre running career only to come back in their thirties and medal at the oLympics that's weird, if someone drops tons of time in the span of 1 year to also medal at the olympics that's weird.
If someone is affiliating with sketchy coaches and teammates who are busted for doping that's weird.
And if someone has dominated the NCAA and made the Olympics by cross-training....?
That's weird.