Absolutely this.
Also.. he may be a "good man", but only absolutely on his own terms and with strict self-enforced limitations. In his own environment, surrounded by his own family, with a fairly undemanding job working for a relative - with an attentive well paid partner doing all the planning and managing yes.. he's a good man. He didn't beat you, fall over drunk or shag around. Does that minimum standard make him a "good" partner?
But he wasn't a good enough man for you. Not prepared to meet you half way. Effectively lied to you about ever intending to move. Not even prepared to leave home for a few weeks to go on a good holiday ffs!
You were expected to compress yourself to fit precisely into the jigsaw he had already constructed, one that he never had any intention of changing. The tears etc.. are because he feels sorry for himself and probably wishes he'd never been so frank about not wanting to change.
Its unfortunate that its come at the same time as the redundancy but he's really playing the victim, with you as the wicked villain...and yet he's made zero effort on so many counts for so long, refusing to do things that wouldn't have made that much disruption to his small world, but would have meant a lot to you, effectively sucking the life out of you.. but of course none of this is his fault.
I agree that the cousin feels guilty (despite the generous 2 year government mandated redundancy terms) and is trying to shift any blame onto you.
The weird sexual remark was insulting... was he trying to suggest that you were leaving to go to another man? (Because no woman has enough agency to leave for their own sanity?) Or did he in fact have a bit of a crush on you?.. Seems an odd direction for his thoughts.
I think cousin's also being over performative to demonstrate that he is "supporting" him, by behaving like a shit to you.
Shake the dust from your sandals.. None of them are your problem anymore.
It think it takes a lot of courage to do what you've done and it may not be easy at times, but from the way you've made your decision and acted on it overcoming obstacles.. and the kindness you showed at the end, it bodes well for your future success and at least you won't have this suffocating drama to deal with.
Enjoy being the Heroine of your own story and not the Villain from over Yonder.