No, I said "she’s one of the most toxic and inept politicians I’ve ever seen." Hillary Clinton is the most toxic and inept. But Warren is cancerous, because since she is positioned as a leader in the Democratic party, even though her bad habits and poor instincts matasticize into other parts of the party and cost votes.
More toxic to America? Of course. More toxic politically to their own party? The only one who comes close is Ted Cruz, who I compared Warren to. She's as damaging to her party's brand as he is to the GOP.
No, We need more people like her serving as appointees, which is why I said "She should have stayed in the appointee lane like Samantha Power." Usually the best appointees make for middling to bad candidates/elected officials. What you are asking for is a "cultural shift" away from elections being what they have always been, in all places at all times: popularity contests. Democrats need to accept reality and treat them that way, not attempt cultural shift through tone deafness.
No, we need serious people who can win elections.