I enter the library with a laptop, and list of tasks and URLs. Tasks, meaning I have to e.g. search for a PDF manual for a 2nd-hand appliance I either bought for pulled from a dumpster. Or research something. For URLs that I just need to save for later reading, I open them in FF (many tabs) and use the SingleFile extension to save them one by one. Of course that robs me of human time that I need for tasks that must be interactive. My time would be more wisely managed to have HTtrack fetching what I need in the background while I do interactive things. I sometimes stay until I get kicked out because the library is closing, in which case my needs were not all satisfied.
For Lemmy, I save posts in advance as text files and copy-paste the text into a Lemmy web client. This is also not a good use of my time but the only offline lemmy client is broken. But if there were a non-broken lemmy client for offline access, it would probably face the same discrimination by this reckless and obnoxious anti-bot movement.