I miss the reactions page. I don't know what that "safe exchange of ideas is about". It's fun to read them and to respond. Did somebody?
What's the problem? Are you worried about a right wing reactionary takeover of communication? (a valid fear) I'm guessing that the "rabid rightists" of whom you are afraid, will characterize Yahoo as Right Wing Nuts. (This is also a valid concern).
I have not seen Yahoo as an originator of "hate speech". To me your algorithms are fine. I'm not sure how you're stated goals align with your published goals. I'm guessing they don't. I also believe you don't know who you want to be.
Who DO you want to be?