I’d guess the easiest explanation (which admittedly erases all nuance) is that folks just misinterpreted the question and reflexively dismissed it as soon as they saw “Z-Library” and “Helpful”.

I’d also be inclined to discard theoretical “in the long run it’ll be unhelpful” concerns, since that opens up an infinitely-deep can of hypothetical contrived scenarios of arbitrary complexity that can’t be disproven. I’m sure there are very real concerns, but it’s impossible to reason about which concerns specifically people would care about.

IMO that leaves the purely practical concerns:

- Students in poverty might not have reliable internet, devices or digital literacy. If zlib isn’t available to them, it isn’t helpful

- Books available might not cater to the local language/culture, or the real world curriculum needs of those students. If zlib doesn’t help them succeed, it isn’t helpful

- The interface sucks and is confusing, which makes students struggle to find what‘s useful. If zlib isn’t useable for them, it isn’t helpful