I would suggest those people pay ALL your wages
What they pay for is to be conveyed from A to B by air. I do my job by getting them there and don't feel the slightest need to feel personally grateful to them for deciding they fancy a weekend in Amsterdam. Or to humour their phobia about flying.
Bums on seats...thats all they are...as Mike O'L would say...the rest is just bollixology.
As to the suggestion of a PA every time we hit a burble of CAT, get a ripple of wake, or move the speedbrake lever...oh yeah...I can just see that flight deck.
1010:05 "Ladies and Gentlemen, there is absolutely nothing to be alarmed at. Thank you."
1012:05 "Ladies and Gentlemen, there is absolutely nothing to be alarmed at. Thank you."
1015:05 "Ladies and Gentlemen, there is absolutely nothing to be alarmed at. Thank you."
Result....Alarm and Panic at the nutcase flying the a/c.