I dont think there are any moral considerations. The stove does not have anything patented so to me im just buying from the cheapest supplier.
I agree in this instance - as you know I've bought a chinese one too, purely because of the price! I'm guessing with this particular design that it actually started out in the far east, and a clever marketing agent spotted an opportunity to sell in the UK for prices comparable to the Bush Buddy, rather than it being developed here, and copied over there.
But there are issues with far-eastern copies - safety being only one, threats to ongoing R&D being another. For example, Kovea in Korea produce a multifuel stove (Booster +1) that has passed all the safety tests in Scandinavia, and was good enough to be sold by Brunton in the USA as a Brunto Lander stove. However, you can go online and find lots of adverts for multifuel stoves, sold as Booster +1s, which clearly aren't (and appear to be based on stoves that have failed the scandinavian tests for safety). Kovea only claim that the stove is a white gas/canister gas stove, but the "clones" are selling them as burning all types of liquid fuel