It was said that the team really liked Joe Milton. Unfortunately, that didn't mean Joe Milton was the better QB than Hooker. That's not to imply the team didn't like Hooker, they did but Joe was apparently really well liked in the locker room.
Leadership matters. Being the new guy, coming in late after the drama with Nico, being relatively unknown (not a highly sought after blue chip QB like Merk or G-Mac,) Joey Aguilar is right to try to establish himself as a voice on the team.
It'll be even better if he can establish himself as a leader on the field but some of that starts off the field.