Just out of interest as I'd like to know if this is a normal, typical thing.
In dhs parents eyes he can do no wrong. Not that I try to deliberately involve them in the ins and outs of our lives. But for example they'll often give dh credit for things that I've actually done, or if I mention in front of them that I need dh to do something my mother in law will jump in about how he's tired/he works hard. Even though I'm tired and work hard too. It's taken many years for my mother in law to realise that I'm not dhs PA.
They are the same with their dd, they openly slag their dds husband off implying he's not good enough for their dd.
It's a minor irritation but over the years dhs has reverted to a 9 year old boy whenever we were in their company, much less so now.