It feels like dota forces me to play my old 1k mmr account. I'll get my 4k pts in something like 3 days, but I'll ruin a lot of fun and time for other people. But I dunno what to do… It's impossible to play main account after the introduction of smurfing or account buying report.
Source: https://www.reddit.com/r/DotA2/comments/mofj8r/its_10k_behavior_score_and_im_playing_with_game/