The world is a wonderful place because we all have different points of view.
I think that when making a PA in an X language pax feel very welcome, and they feel that we (Cabin Crew) and the Airline are walking that extra mile for them. As far as it is clear and understandable I don't see the reason why not to give to our customers that "little" attention.
But again, we all have different ideas, don't we?
P.S. as far a safety is concern law says it is mandatory safety PA in the airline own language and in English.