And to zero this home even more... the hltv link has 3 supporting statements... in regards to the points;
"ESIC has therefore concluded that the only sensible solution for the CS:GO community was to draw a line in the sand as of the date of this statement by indicating that we are closing all current investigations without prosecution and reiterating that any violation of this rule from today onwards will be prosecuted vigorously and the maximum available sanction sought if the player, coach or team is found guilty," ESIC said.
This means an investigation will deem if the team is found guilty... regardless of zero tolerance.
2."Rules prohibiting the viewing of a CS:GO broadcast should be reviewed and, if necessary, strengthened, republished and notified to all participants"
Depending on the use of "Participants" you would have to prove it was the players or the coach "Viewing" the stream, you can't expect no one in the building to have the stream up.
3."ESIC reinforces prohibition on stream sniping in CSGO with its notification of a zero tolerance policy."
Stream sniping is specifically mentioned... meaning they have to be proven guilty of stream sniping for the zero tolerance policy to be effective.
In short they can reprimand them on having the stream visible... but they have to prove the players stream sniped for that zero tolerance policy to have standing... take it as you will.