They transfer all the steem from their transactions to Binance.
Binance had stopped steem operations, so they did too.
I think it was a preventive reaction due to a lack of information about the uncertainty about the future of steemit as a result of the hive fork.

Orinoco currently resumed its operations with steem.
The other active exchange in Venezuela is called Capybaraexchange. They did not stop. In fact, they are already testing to buy Hive.