Not a good thing.
And the worst part is the dispute that South Korea is using to hang up this agreement with Japan is not even over the military sharing agreement or anything related to it. The current Leftist president of South Korea is using a separate issue as his excuse for scuttling the military intelligence sharing agreement. For this he gets to sound, to his fellow South Korean Leftists as “hard on Japan”, while it is North Korea who will benefit from the agreement with Japan being scraped. It shows Moon’s priortities are 100% political interests and not truly South Korean national interests.
This could work:
Wonder if there is a deal to be made here. US reneges on outrageous defense sharing cost demands, South Korea agrees to continue GSOMIA, and Japan resets relations with South Korea. Basically back to status quo.
https://twitter.com/benjaminaengel/status/1195546034815942656