The simplest way is to stop rigging matches.
Randomly grab accounts, mix them well, and ship quick matches. Match intensity averages out to the population average, and you sink/swim against that. Smurfs can’t do anything now because the matchmaker stops looking at people’s SR. SR is just a number on your profile that shows your longterm win/loss against a random backdrop.
Fixing smurfing completely is a million dollar prize that solves all of esports. I have solutions but lmao Scott isn’t getting those for free.