Echoing other comments, your company was acquired. The way you're used to doing things sounds like it's quite different from how the new owners do things.

I can't make any sort of judgment call on which is or isn't "better" based on a brief HN post, but I think it's worth keeping in mind that it pays to be adaptable and to scout out the post-acquisition lay of the land before you let it affect you too much.

You don't want to create an impression of being a "difficult" employee "left over" from the acquired company, as unjust or unfair as that may seem.