Some random guy getting arrested is irrelevant to me and it should be irrelevant to all crypto users, what I'm worried about is when a country actively tries to do something about Bitcoin like Russia seems to be doing now.
Arresting prominent members of a movement for things that others (HSBC, cough, cough) get away with on a daily basis should worry you. Indeed, that is the most effective way for them to "do something about Bitcoin". For every Shrem they jail another hundred are scared out of being publicly involved.
Since you mention Russia, this is exactly how the USSR held the satellite states in orbit (tanks only rolled twice). Check out the CNN 12-part documentary someday. "So and so of the [opposition] peasant party" would simply find themselves in jail before they could get elected. Pretty damn easy to win elections with that trick up your sleeve.