Bf said it’s weird to want to donate milk to other moms even though our baby is not currently breastfeeding anymore…?

My bf has made some comments lately that’s kinda made me feel “shamed” for wanting to give breastmilk to other moms for their babies. I’ve been breastfeeding our baby for almost 3 months now but we recently found out he had a dairy allergy/CMPA. I cut dairy out for about a month and saw no improvement he was still having reactions to something in my diet so after seeing an allergist we discovered he has multiple food allergies and it’s just been REALLY hard cutting so much out of my diet. He has been absolutely miserable with gas, spitting up, severe colic, severe eczema to the point his skin has been bleeding from it, swollen/puffy eyes, bloody stools, diaper rashes, etc. me and his doctor agreed it would be best to just put him on a hypoallergenic formula and he’s already improving so much since we’ve switched but I’m not ready to stop breastfeeding yet. I haven’t had any issues with my supply I actually have an oversupply and would hate to stop producing just because my baby can’t drink it when there’s other moms out there who struggle to make enough for their babies. I told my bf I’d rather someone else’s baby drink it and it help someone else out than to just give up this soon but he said that was weird and “messed up” that I would feel other peoples babies when ours is on formula.. it kinda made me feel bad and I feel like he’s judging me or something. I already feel bad enough that our baby has so many allergies and didn’t tolerate my milk and he just made me feel worse. Is it actually weird or messed up that I want to do that or is he just making it weird and being an ass about it..?