Because we had no better, realistic choice to win with and we couldn't let Trump win again.
And yes, the 1996 Telecommunications Act, and many other forms of deregulation, are an affront to democracy. Allowing corporations to have complete control over workers and society is indeed a problem for democratic institutions. As is allowing consolidation, where a small handful of corporations control more than 2/3rds of he radio and TV stations in this country. The right wing media ecosphere, formed on talk radio originally, did indeed give rise to the right's power. Whether it be the Republican Revolution of 1994, George W. Bush winning in 2000, or the Tea Party in the late 2000's, right wing talk radio aided all of that. And deregulation of radio and other media outlets, done through the 1996 Telecommunications Act, aided that all along.