[MCU] In retrospect, wasn't it stupid of HYDRA to come out of hiding during Winter Soldier when effectively they already won?

They already controlled most of SHIELD, everyone thought they were extinct, had powerful people in their pocket etc. Trying to assassinate Nick Fury seems completely unnecessary, just sit back and don't rock the boat. Zola himself said that people will happily give up their freedoms as long as you aren't too in their faces about it.