That'd be an acceptable excuse if we were talking about the Avengers going up against a group of HYDRA agents, but the world - ending threat of the Mad Titan, Thanos, is just a little more serious than a broken secret organization. (cbr.com)
We rejoin the team mid-action as they tussle with HYDRA agent Baron von Strucker's (Thomas Kretschmann) men on a mission to retrieve Loki's stolen sceptre. (gamesradar.com)
Serious scientific inquiry goes all the way back to 1740, when Abraham Trembley experimented with hydra. (wi.mit.edu)