Literally because the strategist that lost Hillary's presidential run told the DNC that it was too mean

One girl said “it doesn’t matter if you ban a book because everyone can find that information online” and then I blew their minds by talking about how your search history can be monitored and sold to the government without your permission, but your library borrowing history requires a warrant.

I assume you don't know what Feterman is all about, so I'll tell you: he has very obviously sold out his party and constituents by doing the opposite of what he said he would do when he was running.

Tolerance of the intolerant is a big reason we're in such a state.