I'm so sorry, that is hard and it is still such early days.
My son died two years ago, and people do some strange things either out of awkwardness or lack of thought. Both are hurtful.
I would be hurt by this. You don't want to put anyone's life on hold but they are your parents and should be more understanding.
I've found that sometimes things like this are OK, but only if everyone is understanding about how difficult it is for you. For example, I've attended nieces christenings, other funerals and, whilst I don't want to make every occasion all about me, people understand that things are hard and messy and I can't pretend I'm fine.
It doesn't sound like your parents are doing that for you and I'm so sorry about that.
So no, YANBU and, even if you are, you are grieving and have my full permission to do whatever the fuck you like b