People randomly getting 23000 coins added to their account?

Had a couple of friends reach out to me saying they all of a sudden had 23000 coins on their accounts without making a purchase, after a little searching I found a couple of recent posts in the main PoGo sub with the same situation. Anyone know what this might be from?

https://www.reddit.com/r/pokemongo/s/ntwzjeHxUN

https://www.reddit.com/r/pokemongo/s/PP7Ypas1uS