Having been around an incredibly long time it's interesting to watch site opinion in general change over time. At one point they were arguably too popular. So popular in fact that running them in normal games became a big enough issue for an outright ban to be issued on their use in normals. Even after that ban a lot of the sentiment I saw on Hydras was that more people tended to enjoy being able to play in games with them than not.
Now it seems like the opposite is true. (At least from perusing this thread.) It's just funny to watch the site's sentiment on hydras change over time as much as is has.