The JWs do not “discourage” you from having a library in fact you are encouraged to have one.
I had built up an extensive library of WT publications since I joined the JWs in the late 80's. Even after waking up in the early 2000's, I continued to add to my library. Then the letter from the branch asking for all old publications to be sent back to them. I kept my collection, then came the guilt pressure from my close JW family who are completely in, they kept telling me to dump my collection as we don't use these anymore, everything we need is now online they would tell me. I sold half my library, got some $$ for that, of course I was told to contribute this $$ back to WT, which didn't happen. I did end up dumping my WT volumes. I kept some of the older books, the older ones that woke me up I've kept. "Study of the scriptures vol 2 1917", creation book from 1927 to name the two publications that revealed how WT have rewritten their own history regarding the year 1914, or should I say the non 1914 date, as neither of these 2 publications even contain any reference to the 1914 date in the chapters dealing with the biblical timeline in that time period.