My initial reaction was one of disappointment at how little there was. However, for a "reality check" I telephoned a couple of "civvies" with no experience of the aviation industry and got the following unexpected (to me) reaction:
1. Some of the security stuff shocked them.
2. Confirmation of the company culture that they had heard about - but now could see in action (and did not like).
3. The issue of crew fatigue (especially the demotion of a captain a few days earlier than when the recording was made), and,
4. The "clearly sincere and worrying" remarks about people possibly loosing their jobs for doing what they should do.
One thing is reasonably clear: after all the hype I don't think Ryanair have much prospect of successfully suing C4. What is less clear is where this will go from here.