I'm not aware of any other examiners who use this tool. I did ask an examiner I know to try it and they did, but they didn't find it useful. They suggested that the warnings that plint returns are more relevant to the areas I examine than what they examine, which is fair. They also found my syntax for antecedent basis checking to be confusing.
The personal reason why I made it nitpicky is that there's a huge variability between examiners in terms of which rejections to make. I'm a junior examiner, so everything I do has to be approved by someone else. They might tell me to remove a certain rejection because they don't have a problem with that, and to add some other rejections for things they care about. In my view, it would be better to get a wide range of possible rejections upfront and then think about which ones the person signing off on the office action cares about. The alternative is going back and forth about which rejections to do, which would take more time.
The JSON configuration file I use filters out a bunch of the rules because the person who signs my office actions right now doesn't care about those ones, or I don't care about those ones. I need to update the README file to say that.
Also, an attorney writing a patent application has much less information about which rejections are likely than I do. So from the perspective of an attorney, I think being nitpicky makes sense too. Not that I'm aware of any attorneys who use plint.
plint might not even be nitpicky enough. Recently r/patentexaminer had a poll [0] where about 6% of examiners said that the term "at least one" was indefinite... which is astounding to me as I think that's totally fine from a definiteness standpoint. As I recall, I have some warnings in my linter for enablement on that in case it's not clear how having two or more of something would work if only one is disclosed. But usually "at least one" is fine from an enablement perspective.
[0] https://www.reddit.com/r/patentexaminer/comments/xfvsrs/at_l...
(Again, my posts here are only my opinion, not that of the USPTO, US govt., etc.)