Sounds to me like your son is an excellent husband who is giving you the information you need to keep the relationship healthy.
His wife just had a baby. Her hormones are tanking. She's sleep deprived (as is he). She might be dealing with postpartum anxiety or postpartum rage. He sees that and is giving you tips to head off any hot buttons.
It's valid for you to think it's a bit much and to be offended, but take his words as a blessing. Your son feels comfortable enough to communicate their needs. He cares enough about the health of their relationship with you to give you a heads up about her triggers.
You can stand on ceremony and share your annoyance, or you can take this as privileged inside information that will ensure the best possible visits.
I wish my husband would've communicated triggers like these with his mother before she came by. "Cuddle" wasn't on my list, but other things were. It was a short list of things she said that (maybe 3 or 4) that made me want to move far away every time she visited. Things/action that may have sounded completely harmless to you, but caused me terrible distress every time.
Desperately sad story of the assisted suicide of a grieving mother


