Opinionated?

Miniflux is an open source RSS reader, they describe themselves as "a minimalist and opinionated feed reader." What opionions you might ask? Well there's an entire page for that. I like this, I wish more open source projects clearly listed their design decisions, it helps filter through issues, feature requests and pull requests with a justification of why something is out of scope. I imagine this also would help deter some of those interactions from the beginning helping reduce the workload on larger active projects.