He did contribute to/utilize probability theory. He came up during my undergrad probability class because of this: https://en.wikipedia.org/wiki/Probabilistic_method

Erdos is also widely considered as the most prolific and productive mathematician of all time (in terms of publications and collaborations). Hopefully you can be as productive with Erdos :)

But productive with it in a different field from the person it's named after? That's weird. It seems disrespectful to him to name a product after him when its purpose is pretty much unrelated to his work.