Yeh reading app reviews is toxic. We build a free open source/creative commons app (https://www.secfirst.org) to help people learn about digital and physical security. It's one of the biggest guides ever written about the topic, something like about 160k words in 40 different topics translated into 7 main languages. All done with volunteers.
We regularly get people giving us one star reviews and telling us the app is shit because it's not translated into Japanese, Korean, Dutch or Norwegian etc. I mean we'd love to translate it into all these languages but Norway isn't exactly the world's most dangerous country so not our main priority. We try to reach out to every user who contacts us no matter what and sometimes we send people the details about how easily to help is translate it if they can - but the usual answer is abrupt, unhelpful and dismissive.
> why doesn't the app do this? why is it free? are you selling our data?
These are all valid questions, in my opinion, especially the last two. Some of them could easily be answered in a FAQ section.
And no, I almost never leave reviews, so I am not one of "them".