We definitely not sure then what is their plan as they are very aggresive accumulating Bitcoin but even they are buying more, it doesn't give worries to us. These numbers of 2% plus versus the total amount of market supply, that is only small amount and it don't have a huge impact in the market.

We don't mind about the 51% market attack. This is not the way it looks like.
It is something to say that Grayscale are getting prepared for the future changes. And they are doing it earlier, there is nothing to worry about and probably many companies have doing this silently.