> Why can't researchers just publish something on a pre-print like ArXiv?

In my field, Arxiv has too many really suboptimal manuscripts, too much garbage, and is not well indexed. Looking for decent stuff is hard. I would really like our institution’s library to pay someone to sift through Arxiv full time and compile lists of decent articles regularly. Like how they used to do when you had to physically go to a library to even get the titles of published articles. This was enough of a hassle to make bibliography lists valuable. But yeah in the meantime, it’s too expensive in terms of wasted time compared to even Google Scholar.