No I understand, I just have definately heard about people getting banned or warned from excessively tanking. This is a forum post I just found on a guy who got banned apparently for doing it to much.
https://forumserver.twoplustwo.com/...-cartel-division-members-reported-me-1669758/
This letter is classic lol,
"Hello Karl-Joonatan,
On the 10.04. you acknowledged our Terms of Service to not delay games.
We have found you deliberately stalling/delaying a tournament again in tournament #1932865005 - taking very long for almost every decision, no matter how obvious the decision.
In our last email we informed you that future violations may result in further action against your account.
We have therefore decided to suspend your account until the 18.06.2017.
You may contact us after this date to have your account reinstated.
Thank you for your understanding.
Regards,
Tino
Stars Support"
Could be a bogus forum post but I've definitely heard multiple times about people being warned/banned in regards to intentionally tanking during tourneys.