He's a prick, OP.
I struggled with breastfeeding. It hurt like mad for the first 8 weeks. My milk didn't come in well and he lost loads of weight. We got readmitted with jaundice as a result, and then had daily midwife visits, and even the GP advised we switched to formula and said there was no glory in breastfeeding and formula was fine. I sobbed.
DH was absolutely there for me. He bought DS to me all the time. He bought me drinks, and cakes, and encouraged me to nap. He must have gone to get me eight million different nipple creams, even though none helped. When we did have to do some formula top ups, he tried to hide the bottles from me and lived with the inevitable hormonal tears every time we did it...
And he bonded in a million other ways. Bathtimes, burping, cuddles, holding him while I slept, changing 90% of the nappies, getting him dressed.
He's been a dick. It's a personal choice how you feed your baby but breastfeeding is a sacrifice, as much as it's a joy; and he should have supported your decision, not used it as a backhanded way to get out of any responsibility towards your baby and then proclaimed it as the reason he hasn't bonded.
He hasn't bonded because he hasn't tried.