During my sec school days in the 80s, we were already going to Australia, Malaysia and Taiwan for geography, history and language field trips. So to me its not really an issue, especially when I managed to learnt some things that I can't really see in Singapore, eg Blow holes, stalactites, stalamites, or the lifes of the dayak in Long House Sarawak etc....ok, now we can see the fakes stalacites at Gardens by the Bay
My boy who is now in P2 is given an opportunity to visit Jiangnan for a 10-day immersion field trip. Some parents feel its too short and there isnt any value in going and opted out of the trip. However, I thought its a rather nice opportunity for the boy to be exposed to a different culture and the family can also treat it like a holiday alternative to Japan Disney land or Hawaii.
In bigger countries like Australia, UK or US, its common to have field or camping trips to other parts of their country. For us Singapore, once we travel more than 42 km and we are overseas already. Thus, I feel its a great idea and fully support such overseas school trips.....besides, its not really a new thing....maybe more common with the affluence of the country and lower air travel costs.