I guess I would need more data on what 'freezing' means.
If it is just on the exchanges, then don't use exchanges, but if they are freezing them at the miners, that would be troublesome.
As long as the witnesses don't block us, nor the api's, then I don't think we have any problems.
Best bet is to do away with the authority that the freezers think that they have.
Among a free people this is not an issue.
IIRC an exchange froze Russian wallets. I don't use exchanges or BTC, so the specifics weren't particularly relevant. I'm just glad Steem is safu!
Oh, wait..
Lol,...
It does matter who the top 20 witnesses are, as well as what they are up to.