What "whistleblowers"? Proven liar and manipulative editor, felon, and direct cause of a spree shooting James O'Keefe and his mark of inaccuracy Project Veritas?The object of the 1st fragment is not the same as the person described in the 2nd fragment.
As for "having their speech" - they already have it but nobody has to help them spread it.
It's one thing to "not spread" something. It's another thing entirely when there are people who want information, even want to pay for it, and big companies get in the way to push their own agenda. It's not just the most radical segments this applies to, but lots of normal people nearer to the center. Also, it's really something that big companies do this, all the while claiming they're "platforms" not "publishers."