I've been working towards the legendary fish and my Steamdeck has been offline for a week. The achievement was 0.9% of players when I got it then I turned on wifi and the achievement changed to 3.7% of players. Other things like finishing the game are now 10%.

Seems like a reasonable change but I was bummed to see my <1% turned into a 4% achievement.

Side note: I think 10% of players beating SA is a huge achievement for Wube given the amount of time and dedication it takes to complete. I'm an achievement hunter so I always look and I can't think of any game that has a high completion rate for an achievement that requires that much effort.