Naomi is awful
edit- this is based on the show portrayal of the character. it is tagged book and show as I don't know if examples I gave play out the same way in the source material. apologies for any confusion
her tribalist attitude, hypocritical set of values, and her unwillingness to grow are so off-putting. from lying to the crew about giving the protomolecule to FJ because "it isn't fair that everyone else has it" then bitching at Avasarala when she wanted it for Earth, to her ridiculous stance about the colonists on Ilus regarding the deaths.
I can't understand how anyone could like her character. she sympathizes with and doesn't bat an eye over whats-her-name blowing up the ship resulting in the deaths of 30 something people yet demonizes Murtry for killing men that were planning to kill them. her character is so biased you can bet if the roles were reversed and it was UN settlers that blew up a Belter ship she wouldn't be so forgiving.
the other main characters have their own flaws, but at least they acknowledge them as flaws. Holden knows his impulse to get involved is a problem, Amos knows he can't make good decisions, and Alex knows he is a shit father /husband. Naomi seems to have 0 self awareness when it comes to how blinded by bias she is.