A fair punishment would be a warning first, and only in case of a repeat offense (i.e., actually "next time") a tech ban. But the further problem was that we also had to convince Tvarina to continue playing, because he is by no means obligated to let the positive side's inappropriate whining and attempts to distract an opponent mid-game slide. This is simply understandable from a human perspective. This also had to be taken into account!! And there was no time to let things cool down.
That's why I wrote above that the correct logic would have been to suggest that the positive side write to Tvarina and admit that it was he, the positive side, who first crossed the line of acceptable behavior — WAS IN THE WRONG. That's all that is required from him. That's why he is given time until the next instance, to come to understand this.
And then, if something still goes wrong afterwards, we can consider tech bans and it would be obvious for whom and why.
But even this was not done. And as we now see in this thread, the positive side had yet another repeat offense — a quote from Bubuch.
The solution was approached formally. It turned out, to put it mildly, not great.
The whiner and unmannered player moves on. The best streamer of Heroes, Tvarina, was eliminated from the tournament for non-sporting reasons, having done nothing inappropriate, and may not play on HeroesWorld anymore. Great.
p.s. so the author of the problem couldn't even calm down — in farewell he writes "no place for weaklings here". and yet again does not receive a disqualification for a repeated violation of the rule on respect for an opponent within the same tournament.