I do not think we need to.
I think I personally struggled with some things for to long and should a looked into them earlier than I did – but I do also believe that things happen in fullness of time. People will mostly start up on such things if their current world view is challenged or they have difficulties in live.
There are also different approaches and not all will back, many will just look at how we are functioning now and address whether some thinking or reactions we would benefit to change.
I do not see it as a can of worms it is more the ghost under the bed – its influence comes from not being challenged.
I do though agree it can be used as a scapegoat.
You can not blame your father for being sick, you can partly blame your grandmother for disliking you – it does not matter much though. But you have to realize and acknowledge, in my view, that this was not fair towards you and there is some grief there.
Take care.