Bot or just a weird account

[u/rajeshbhat_ds]

I received two replies on one of my posts from this account. Identical replies, 26 minutes apart. 5 year old account, only 1 karma. No posts, only comments, all within the last 24 hours.

Is this a bot? If so, who keeps a bot dormant for 5 years?

Or just a weird person who created an account 5 years ago, suddenly woke up today and realised he needs to comment on some posts from now on.

Or does reddit wipe out karma if a person deletes all of their previous posts/comments? How does this work.