I don't have a viewpoint per se. It is just that the size and location of the investment is unusual and comes against the backdrop of geopolitical tensions.
If you already have a foothold in South Korea, moving to anywhere south won't give you much safety (especially given NK's, although crude, launch capability). That's why Seoul is so close to the DMZ and still perfectly functioning.
The amount seems unprecedented and the timing. I understand competing for marketshare with TSMC, but it made me think like they are scrambling in case TSMC suddenly goes poof.
You have a viewpoint from the area that you come from. South Korea has a very different viewpoint to yours. Samsung is competing with TSMC, who is ahead and also investing massively. The only surprising thing about this headline is the amount, but makes sense when it is spread out over literally decades.