No. There's also been a lot of noise over the Elgin Marbles (stolen from Greece, mentioned in the article). The Koh-i-Noor has just been in the news lately because of the death of the queen and it being part of the crown jewels.
[1]:https://www.theguardian.com/uk-news/2019/feb/18/uk-museums-f...
> I think it's debatable if Greece (or the Ottomon Empire) is even part of the western nations.
The Parthenon marbles are over two millennia old. They were looted by Elgin just over two centuries ago.
Greece's history stretches back at least four millennia (since the Mycenaeans - considered the first Greek peoples). The Ottoman empire occupied Greece for a bit under four centuries.
You're likely to get a fairer hearing for your points if you don't pepper them with errors.
Meanwhile, repatriation of artefacts taken from Asia/Africa is a more modern movement that has coincided with anti-colonialism. So although the debate about repatriating the Elgin Marbles has been going on for ~200 years, in my opinion, it is being lumped together with the anti-colonial movements and even fits into that pattern. If you don't believe there is a movement to repatriate artefacts taken during colonial times from non-western nations see the link above or do a search.
There is no movement to return loot or spoils of war to western beneficiaries. So it seems pretty clear to me that anti-colonalism motivates the current claims which is a political ideology. If it was strictly about the ethics of looting, you might see people advocating for a return of items to churches and western countries but no one does that.