I have a feeling that some people think an overriding preference for manual transmissions implies a desire to drive everything hard or "enthusiastically" all the time, which understandably runs counter to the character of a luxury car. But that's not why I prefer a manual. A manual is really just satisfying and enjoyable in ordinary commutes; slow and casual is when I want a manual the most, because it lends color to otherwise uneventful drives.I guess you could probably say due to preference that you'd have a large majority of your cars manual and that's fine - but your necessity for manualised luxury cars and the like would probably be an unpopular opinion in itself.
As the hypothetical owner of this Rolls-Royce or whatever, there's nothing about a luxury car that justifies subtracting a manual transmission from the equation. If the owner's in the back and is fussy about perceptible shifts, it's his/her choice.