Completely ? Ha yes, now that you mention that, a big MS seems to be inactive for a few months.
Inactive is just part of the story: he has been writing quite regularly and got merits. He just stopped sending merits, both as MS and as regular user.
I think he might have good reasons for this.
not being a merit source anymore.
It is now up to him if he wants to disclose a little bit about the reasons that led him to this decision.