is smurfing bannable?

i played a game of ranked after a long break (like a month or so, keep in mind i don't play ranked often), and my mmr is quite high, like a whole entire division up. i just got to gold 1 and in that game i played vs and with plat 3+ players, and at the end one of the enemy players called me the "saddest smurf alive", so is smurfing bannable? i wanna know so i can know if i might get falsely banned or not
Report as:
Offensive Spam Harassment Incorrect Board