As regards the confusion of the destination, crews are often momentarily confused. How many times have you heard the FA or the pilots pause slightly before they mention the destination ? It doesn't mean they are going to fly to the wrong city it's just they fly to a lot of different places and the brain needs to process that information in the context of what they are doing at the time.
As for the pilot giving technical explanations this probably illustrates why most FD crew stick to generalised information without going into specifics. Because, what's the point ? Most passengers are not going to understand the implications of a particular technical limitation. Also, this TUI flight looks like it was, possibly, flying package tourists home from holiday. These passengers may well have been infrequent travellers who only 'survive' a flight once per year. More frequent travellers understand that aircraft operate under very strict rules.