Well a little to be honest 'cause I know what they mean. They too are going to be a parent soon. It actually took a second for me to write that second sentence because he's not "having a baby" or "pregnant".
Technically he can't say "Sykadelic and I are having a baby!" NOPE, WRONG, she is, you aren't.
If someone said to me "my wife is pregnant" and excludes himself from the equation, can't help but wonder if he's the dad.
Maybe I should tell my DH to run around town yelling "I impregnated my wife!"