Yes, around 3k SR its completely flooded with smurfs who ruin matches left and right.
Reason 1 for a smurf: You want to troll/play badly and dont want the lost matches due to it to affect your main-account.
Reason 2 for a smurf: You want to bypass your ban for toxicity and play your “get out of jail for 20$” card; A smurfaccount.
Reason 3 for a smurf: You think youre a god-tier top 500 player and totally blame your teammates and the matchmaking for being stuck in bronze, so you create a new account to be “boosted.”
After 10 lucky placement matches you end up in high plat, but blame only your teammates for your rapid “sudden” decay back to bronze.
Reason 4 for a smurf: You’re a top 500 player and want to grief lower SR matches by using a low-rank smurf and tryharding versus noobs.
You use the clipped material for a “sick” fragmovie with Linkin Park on it.
All of those reasons are reportable for gameplay sabotage, imho.
Go ahead and do it. I’m tired of them.
Get them out of the game and back on their main.