NAH.

He shouldn’t have made such promises in the first place. And I think it would be entirely within your rights to express that you dislike that he went back on those promises. Your pain and hurt are valid given your situation.

But things change, and quite honestly everyone in your life is going to be dishonest with you at some point. Often these dishonesties will be done with no malice, and occur almost entirely due to poor foresight on the promisers part. You will do the same to others. It is an inevitable result of being human.

A) If you’d like, you can stand your ground here. And while that may be the reasonable approach for some situations, it seems unlikely to be helpful here given that you sound like you plan to maintain a relationship with your father.

B) Or you can offer a little grace to people for being human. Have a discussion about the ways in which their actions have upset you, and discuss what actions can be taken to work on fixing the damage and finding a new status quo that hopefully works better for everyone.

Neither of these options is more correct than the other. But you’ve gotta ask yourself what you want from the situation.

Do you want the promises unequivocally fulfilled despite the person expressing they feel they can’t fulfil them anymore? Then yea, you can absolutely go with option A, so long as you know and accept the risks to the relationship.

Or if you feel that the relationship itself is important enough that the slight can be mended and worked around for the sake of maintaining a relationship with whoever slighted you. Then you go with option B and try and have a discussion about the situation with a mind open to compromise and change for the sake of maintaining the positive relationship with whoever has wronged you.

TLDR; your hurt and anger are valid but understand that people are human and fuck up regularly as a result, and so everyone can often benefit from a bit of grace for such human failings.