Which leadership?

I've had one favorite boss get fired, and at least two leave (forced out/encouraged to go) because they agreed with us but their peers or boss didn't. Agreeing with them is fine until it isn't, and then you're a collaborator.

And then there's agreeing with the VP or CTO, but the people between you don't, and try to suppress your enthusiasm. If you go over their heads it better be to get transferred to another team instead of trying to change things in place, because now you're squeezing them and they will retaliate.