The first linked thread is by a person who is doing pixel art. “I'm working on pixel art (very small-resolution bitmaps)”

The second thread you linked is also by a person doing pixel art. “I work on pixel art a lot”

This doesn’t take away from the fact that there’s a blurring issue happening that Affinity don’t seem to be able/willing to solve as of yet, just making it clear that you linked to two threads by people doing small bitmapped pixel art, then denied they had anything to do with it.