Riot doesn't like TiP
Gambit: Was alerted to an investigation going on about TOXIC BEHAIVIOR. Guy gets suspended 8 days later.
Team Impulse: XWX gets banned as the investigation starts. No official ruling given other than the suspension.
And XWX's was for Elo boosting. I feel like Elo boosting isn't as bad to the game as toxicity.
I think Riot just doesn't want TiP to beat TSM in the playoffs or C9 in the Worlds tourney. But that's just a possibility.
Edit: What I mean is that, despite having a good idea of what Forg1ven had done, Riot didn't ban him until 8 days after Gambit was alerted about probable misconduct.