Adding MSG to homecooking AIBU?

[MSGwtaf]

I've just had a row with DP over fucking MSG.
On the rare occasion that he cooks he has been adding MSG to our food despite me asking him not too.
His parents are Caribbean and he claims they use it in everything (I did not know this) and he does when he makes Caribbean food also. And spaghetti bolognese. Wtf.
I found an open packet of it a few months ago in the back of the cupboard and was dumbfounded and asked him if he knew where it had come from. Hesaid it was his blah blah, we had a long discussion about it and I threw it out. Today I've found a new, just opened packet.
AIBU to be really pissed off? I don't want the children eating that. I'm also breastfeeding - I assume it passes through milk?
He's also adamant on giving baby's juice. The arguments we've had over that. His view is that he is a parent too, why can I dictate what they can't have and he have no say at all? My argument is because it's BAD! Why would you want to give them it!

Good to know its not harmful, I remember all the stories about how terrible MSG is, the same people who claimed that in the 90s are probably busy these days sharing Facebook posts about how Diet Coke gives you cancer and vaccines cause autism.

Not sure I would want very young children drinking juice and becoming very used to stronger flavours if it means they reject water and less exciting staple foods like boiled vegetables or potatoes.