I dunno. I was suicidally depressed all day every day for nearly 20 years, and there were people I love who were very consistently supportive. As always, ymmv, but saying it has no basis in reality is false. If the human actions in this post did not exist, I would be dead. Instead, I made it to middle age.
It doesn’t always happen, but there are people that back up feeling the way the post describes with action.
Most public libraries delete identifiable records as soon as you’ve returned the materials, post-Patriot Act. Your librarian should be able to tell you how long your local system keeps your data. Public librarians, on the whole, fucking hate government surveillance.
Source: I am a former public librarian.