I'd disagree with you there. Also, there's big difference between the clientele of my previous and current employer. Same goes for the type of c/c. We'd let them know in the pre/flight briefing and the pax during a PA. Might also be different because of the type/airport I used to operate on/from. It's a small effort that might help put some nervous flyers at ease. I'd appreciate the heads-up if I were one.
Another example, c/c (note) had to inform pax during pre landing PA that we'd be flying the approach with some of the speedbrakes extended untill touchdown. And as a result they would feel a very strong buffet, something for them not to wory about. And that comes from one of europe's leading legacy carriers.
And most cabin crew know what is and what is not normal
Indeed most, but far from all. I've had many c/c (even seasoned ones) come up to me after the pax disembraked asking if there was something wrong after landing as there was lots of noise and vibration. Answer: full reverse thrust. We never used more than idle you see so even some were unfamiliar with that. To let you see where they were coming from, I think I used full reverse thrust max 5 times in a 1 year period. If that...