Hello dear @juanmolina.
"But why are we witnessing an indiscriminate use of this tool and nobody does anything to control it?"
Great question friend, I think this should be controlled in some way, but we will reach a point where people will be running steem and the percentage in content creation will be reduced
It is the same community that is misusing the Downvotes. We have been granted that great power, but we have not known how to use it properly.
These people who are misusing negative voting should react and modify this practice because they are damaging people who are working here and making a great effort to publish.