In the specific case of the experience as related by the OP, this was not a language issue, but a clear example of unprofessional delivery. Let's not make excuses by confusing the two.

That rustling of a long manifest directly in front of the pax would, for me, be the most disappointing aspect of the 'greeting'. Is the Purser (having supposedly earnt promotion to the role) not mature & savvy enough to at least take a couple of seconds to memorise the name just before approaching each status pax ........??

I'm very much on the same wavelength as the OP where fake sincerity is so clearly accompanied by a parrot routine. As per his post ........

".......let's be honest the person giving the greeting doesn't really give a toss, they know, I know and they know I know they know...."