How come everything is "opinionated" these days, and since when has that become a compliment? I don't want software to have opinions, I want it to do what I tell it.
What this really means is that there are few configuration options, that it works mostly out of the box, and that it fits the tastes and needs of the developer. I can't really fault open source devs for that, it's a way to conserve resources. If I don't like something I go look elsewhere (or think about building my own then abandon the project in a git repo somewhere).