SEA and Korea

I'm bored so I rewatched the pacific ascension final because of my fyp and noticed in chat that a lot of people saying something about a new rivalry.
They kept comparing it to Geng vs RRQ, DRX vs PRX and now SPG vs BME.
The question is why people kept creating some rivalry between this sea team against the Korean team.

Because the JP and SA teams are shit so nobody cares about them

So which region is left?