This is a good video on the topic While I personally can very much see why they've banned some runners, I just can't see why for others. I don't agree with everything the youtuber says but it's very compelling.
In short, the organization just seems very quick to blow minor mishaps way out of the water. They seem to enjoy treating their customers and their fanbase as children, and instead of letting people work out their own differences as the adults they are, they like to step in and handle it themselves. Sometimes this goes well, but most of the time it doesn't.
Basically, the way they run the event just tends to cause drama and it doesn't look like they'll be changing anytime soon. I enjoy the runners and the runs, but the event organizers clearly have a lot of issues going on. There's a reason you just don't see this kind of drama with ESA.