Hello,
I do not know why it will be but here there are many less downloads of the free models than in other sites. There will always be people who only look for free models, and those people will never buy anything. They will neither vote nor give thanks, but that does not matter. The important thing is that someone who is thinking of buying a model of an artist, can see his style of work.
For me, it is worse for people who, for whatever reason, put their models too low. If we do not value our work ourselves, who is going to do it? This hurts us all but above all to the one who does it. Any buyer will think that the model has no quality and that the artist is not professional.