Sinema is even more stubborn than Manchin. She's the "I don't give a f*ck what other people say or think" type of politician - she's also said as much.
I just think her situation there in AZ much different than Manchin in WV
as you said, he the best Dems will get out of that state, while dems have options in AZ
she going to be the sole vote to get in the way of Dems’ overarching political agenda (for which ending/adjusting filibuster is truly required for that, which I think it is)? if she wants to end her political career, OK....but otherwise she can get the fukk out of the way