I didn't say anything about it mattering to the project's developers. I said it matters to me because it's an excellent indicator about the quality and personality of the developers working on a project. It helps me to avoid like the plague some janky project where some popular issues languish in 'locked to contributors' when some other project listens to users. Most importantly, when the time comes that I will want to contribute to a project I use by submitting bugfixes or PRs to support other functionality, I know what the climate is like. I'd much rather know to avoid a project before I even decide to use it than six months into embedding it into my production workflow.