All chat related penalties starts at 7 days silence in general. So this is false. Reddit and other discords cannot be considered “proof” as videos and screenshots can be edited.
For actual first hand evidence, check the US CS forums.
Edit: For example, two other threads where I helped players with similar issues report that they’ve been reported for a few days or a few weeks yet nothing happened to them:
There are countless of other players on the same topic. It is blatantly false that you get penalised based on reports only. The reported player in question must also have violated the terms for the report to be deemed valid. The overt majority of all penalties are valid after a secondary check, and you may always appeal if you happen to get penalised.
That’s good, because penalties are given by humans.
If you did something you may get penalised. If your conscience and behaviour is clean, you have really nothing to fear.
That is how banwaves work, an investigation may already be active in the background.