This gets worse every day, like really Hiddleston? You went along with a lock down on instagram? He must be very afraid.
Anyway, there are others social networks, they can't lock them all, and people will know if they do.
And for what? So that people won't know she is with him and buy tickets for Nerd HQ? Because it's not like people need to prepare if they have decided to ignore you at the panel or not engage when you speak.