

The process is supposed to be sustainable. That doesn’t mean you can take one activity and do it to the exclusion of all others and have that be sustainable.
Edit:
Also, regretably, I’m using the now-common framing where “agile” === Scrum.
If we wanna get pure about it, the manifesto doesn’t say anything about sprints. (And also, you don’t do agile… you do a process which is agile. It’s a set of criteria to measure a process against, not a process itself.)
And reasonable people can definitely assert that Scrum does not meet all the criteria in the agile manifesto — at least, as Scrum is usually practiced.
So if library users stop communicating with each other and with the library authors, how are library authors gonna know what to do next? Unless you want them to talk to AIs instead of people, too.
At some point, when we’ve disconnected every human from each other, will we wonder why? Or will we be content with the answer “efficiency”?