But in my personal opinion, there is no problem here; it's an exaggeration, or simply there are no more topics to discuss.

It's a bit of an exaggeration, isn't it? A simple question-and-answer has turned into a discussion...
But the feature can be used successfully. Some people also use two monitors, a program for recognizing builds, etc. It's impossible to keep track of everything. If there were a tournament with a large prize pool, even a small chance would have to be eliminated. In the current situation, the importance of the problem is overstated, but despite this, it has a solution that, if necessary, can be implemented as a separate mod, an agreement, monitoring, etc.
Yes, and as someone pointed out here: the topic is common to all online games, whether it's tournaments, just playing for fun, or something else.