everyone noticed it and there was no secret from the eth co-founder if he sell his eth in this Christmas. no problem at all, eth prices have remained unaffected and have remained at the same prices since last month. so I think news like that will only lead to a FUD.
As long as the ethereum foundation keeps the transparency to the whole of ethereum holders and users, that's fine to see that and just try to take a good thing just like ethereum developer is not so greedy as another developer that comes from ripple or even tron. in the tittle of that news said that secretly which can be considered as the word toward FUD.