Arena tournament: Sandbagging?


I’ve noticed this a few times while playing arena, there’s players typically rated in low 100-900 who have relatively new accounts who often have either thrown games or resign to get to that rating. Is there a point to this sandbagging? Not sure if I quite understand why others are doing this?
Ego feed.
Low self-esteem.
Lazy.
Take your pick.

I've lost to a 400 in a Blitz arena once. I reported him, and his account was removed the next day. This is against chess.com policy, and it's easy to deal with.
I’ve noticed this a few times while playing arena, there’s players typically rated in low 100-900 who have relatively new accounts who often have either thrown games or resign to get to that rating. Is there a point to this sandbagging? Not sure if I quite understand why others are doing this?