If you/your company doesn't have a policy of sending personal feedback please consider doing this at least for junior people. Volunteer your after work time if needed. Trying to find the first job is extremely stressful process. A junior person has no notion of his worth on the market. Each rejection even if only by a lack of any response ("I'm sorry, I'm afraid we are looking for a bit more experienced person" would…
Our HR asked me to personally call people and thank them for their declined application. But at the same time requested to not give any feedback because of fear from litigation. Sad world.
As a relatively junior person in management, it is amazing the kind of phantom fears I've been cautioned against. Some of which don't even have any legal precedent at all!
I think a lot of it is trotted out as managerial "emergency hypothesis" for why someone doesn't want to do something, and so invents some plausible legal risk to justify their decision. But, honestly, it can't be only that.