Yes, but usually nobody reflects it because of the information overflow. It is like thinking - well, it is wasteless to spend time on it. Unfortunately, it is like advertisement. Because the environment is full of it it seems that advertisement does not work. But it works.
And these polls cost money. Money which is not spent for nothing. Like the ads we are looking through.
These comments were just ideas which may reflect only part of what could be found out.
Also, it is interesting that the polls originated in Yale.
If polls stay undiscussed they look like they tell the truth.

Of course, there are more important things in life than polls but: polls make politics.