What do you think of Fil's comment?

[AndroidB]

I was at my inlaws house and bil and sil were mentioning that their friend was having her third baby. Step Fil's (as it's DH's step dad) only comment on the matter was "you think that by now they would have learnt to use contraception". He definitely wasn't joking given the tone of his voice. No one said anything about it or called him up on it. I should have at the time but didn't have the courage, and no doubt others would have jumped to his aid and defended him.
I know it's just a throw away commeny but AIBU to think it's a nasty and non of his business how many children other people have. Step Fil has no children of his own. He in general isn't that keen on people having children and can be vocal about it. He wasn't happy for us when me and dh were having a baby.

I don't know what your problem is, that he has opinion or that he shared it? If it is no one else's business then why were you all talking about it in the first place?
Seems like you are outraged because someone didn't share your opinion.

It was clearly joke as contraception is hardly rocket science?

If he's controlling then I hope your MIL leaves him but the above comment is not a smoking gun, not even a damp match stick.

by above comment I mean his comment

He is entitled to his opinion but at the same token it is none of his business so should have kept said opinion to himself.

He sounds like a tedious twat but he probably imagines it's a dryly humorous way of saying it must be an accident because surely nobody wants 3 children??

I would ignore