Nope. Don't mistake a quick fix as they are "valuable" to the maintainers. They said clearly that it's a hobby project and at the most it just simply means that some volunteers were interested and wanted to fix it, or the fix is not complex, and I would just stop at that. The "valuable" is, again, an outsider view that is forced to the maintainers. Same as "They want google report" thing. Just because they fix some issues reported from someones doesn't mean that they view all of those reports being "valuable".

At most, I would just see that they are annoyed by the issue procedures (without PRs) of the "researchers" and they complaint on the social. I don't agree with their complaints because the "researchers" did nothing wrong either. And that's it, I would stop at that. Putting the whole "duty", "valuable reports" and "demand more" on them is just as bs as their complaints.