I read uninteresting as not very very useful for an external party in general. It was likely developed for an organization's fairly unique needs, is probably not very well documented, and there's no community in the sense that most genuinely useful open source projects have. Dumping a big one-off repo of code is fine but probably no one's going to put the work into seeing if this project that was never intended to be general-purpose is worth trying to adapt for something else.
Exactly this. It's like our websites and some other tools for our particular needs. We have, on rare occasion, gotten PRs from earnest supporters but they have no idea what our product needs are and we can't just merge in stuff that nobody asked for and hasn't been tested.