Max being Max I guess. Not the first (and probably not the last) time he is blaming someone / something else if things are not working out the way he likes.
Of course those disconnects should be examined, maybe things can be improved. But speaking out of experience, doing lots of endurance events, I've never had a random disconnect, if not my whole internet was wonky.
Seeing issues on the server side like mass disconnects, yep, thats something not so uncommon. But then usually those events are red flagged anyways.
Might be, that rF2 is pretty tight with how stable a connection needs to be, so you not get disconnected, but on the other hand, if things work, we've got the best netcode for wheel to wheel racing. Simply compare that to iR where often it's enough for a car to be half a meter away to get hit by it. Speaking for myself, I prefer the rF2 solution big times.
The whole story is really made bigger than it was. What did we have, which we know for sure? A DDoS after server informations have been leaked and some random disconnects which are not very uncommon with having so much drivers from so many places. Especially the latter one could have happened on every platform.
If there have been other issues, like rain causing the first mass dc (if it wasn't a ddos), yep for sure that needs to be solved for the future. but everything else, right now, seems to be pretty easy to explain.
After all, I've enjoyed watching quite a few hours of this event. There have been some good battles and the real-racers did an amazing job keeping up with the simmers.