Ok, so not point scoring (probably wrong choice of words), but you wanted it to be perfect. Why? Father's day is about children showing their love to their dad, not their SM or mum acting on their behalf to do so.
Listen to your OH. He wanted a peaceful loving day with his children and as said before, probably didn't care one bit about the presents, yet you made it about that.
You love buying presents, but that doesn't mean that others have to love receiving them. I do totally sympathise -even if it doesn't seem so!- as I experienced the same with my OH at Christmas last year. I paid for a surprise week-end away and made a book out a craft with riddles for him to guess where we were going. I was very pleased about it and couldn't wait for him to open it. Instead of being excited with the surprise, he got stressed as he couldn't figure out the clue and started to make jokes of it that were hurtful. Not nice, however, it was my fault for not listening. I love surprises, he doesn't.
I've learnt my lesson and for his big birthday coming, he is getting no surprise party or anything, I've asked what he wanted to do and that's what it will be. Not what I would want, but it is what matters to him.
I expect your OH is similar and didn't care one bit about the presents, which if you think of it is understandable. As a mum, I myself would feel much more touched by a thoughtful drawing from my kids, then a present from either my ex or my partner.