I don't think the classical Greek sculptor Phidias, creator of the so-called Elgin marbles (https://en.wikipedia.org/wiki/Elgin_Marbles) wanted them on permanent display in England either.
I would imagine that the original creator of the works would prefer that they exist and be protected for as long as possible.
That doesn't mean that they shouldn't be restored to their original context if practical, so it doesn't really change the discussion around their place in the British Museum in any way that I can think of off the top of my head - but it's worth exploring, certainly. If nothing else, it's an interesting thought exercise that could lead to developing additional context and understanding of the time and culture that led to their creation.
It is equally relevant on any topic involving a museum in Britain, therefore it's irrelevant here.