Yeah, Ackbar should have gone down fighting. Can’t imagine Ackbar being a dick to Poe though.
Or vice versa.
They could have changed the way the dynamics between the two characters played out while still retaining the basic storyline (i.e Poe thinks the Admiral is making a mistake, Poe disobeys, then Admiral is proven right and ultimately sacrifices himself to save the resistance).
Poe clearly had reverence for Holdo before meeting her but was then disappointed by her actions. He could have easily felt the same way about Ackbar (this is the guy who led the Rebel fleet in the Battle of Endor and now his plan is basically to run away in unarmed transports… no way, the guy’s old and lost it, I’m taking over).