Riot Games is cracking down on players’ off-platform conduct
www.engadget.com
Riot Games strengthened its rules to combat and punish players who exhibit offensive behavior in streams and game sessions.

If someone reports you for doing anything against their ToS on other websites then it will hold consequences.

This is another reason why privacy matters. Have different user names on different platforms so you can’t be linked. I don’t condone treating other people poorly however this leads to more control, especially with how crazy ToS/EULAs are and how they are ever changing.