Yes, I know what "polemical" means. And I voted for the other guy.
The truth is not boring - facts in themselves create a completely different kind of cinematic interest, and that's something these critics - clearly - do not have the artistic spectrum to understand.
I should label this film as New Historical Realism.
Will that look okay enough to everybody else for its audiences to respect the hard work that went into researching the facts for it?
Check yourself. You may be in auto-denial mode.