I still receive PMs every once in a while from random people on Reddit thanking me for comments that I’ve posted years ago. Those comments have less than 20 karma combined. I also have a comment saying “Nice.” which contributes nothing and is sitting at almost 3000. Karma is meaningless.
Wait are you saying that with the example your provided your password for Lemmy would be catlemmy-Dog5? Because that’s a terrible system.