> Managers are literally asking whether people need AI credits or interns over summer

That's a bit like asking them to choose between AI credits and a visit to the dentist. No engineer has ever hosted an intern in the hopes of improving their project's velocity; people host interns because "it's the right thing to do" for the industry, because it's psychologically satisfying for many people, and to build cred and/or experience as a mentor. And companies nudge their employees to host interns to hopefully influence potentially-valuable-in-the-future smart youngsters to come back as a year or two later as full time employees.