Looked like they found one little issue and the rest was fluff.
How many CC check the life jackets before flt? As an engineer I do it on a weekly or monthly basis, and it takes an age.
As for the slide bottle pressure, they can and do change as the bottle warms up or cools down so it could easily change from a no-go to a go in a few minutes.
I'm glad we never had cameras in our training classes, tall stories fly around all day, the instructor does it to relieve the boredom!
As for the 'Ryanair don't care about their passengers' line. Well, we knew that didn't we?