MMR boosters suddenly disappear from the Dota 2 leaderboard

Ladder Dota 2 unexpectedly cleared from MMR overleavers, and now the first places once again belong to prominent cybersportsmen.
This is evidenced by data from the official Dota 2 website.
Previously, the top 10 of the European ladder included several overleavers, who were even ahead of the number of MMR of well-known professionals. A similar situation was observed in other regions. However, now all suspicious accounts have disappeared from the rating.
Credits: Valve Corporation
What exactly happened is still unknown. Perhaps Valve banned the rule breakers or the accounts were excluded from the table due to long inactivity in matchmaking.
Earlier BLAST Slam radically changed the format of Dota 2 tournaments.