For sure, whilst the death is very recent, its just crass and insensitive.
And the Bear Hunt song just beggars belief.
But with some of the other comments, its harder to completely condemn them - things like "I'm sorry for your loss" - to some people, that's a completely appropriate thing to have said to them, especially if its by someone who neither know you or the recently deceased person very well. I for one would have found any more emotional or personal comment from some people deeply intrusive, but appreciated it from those who didn't know me so well, but wanted to simply acknowledge that something awful had happened and that they recognised I was grieving.
Ditto some of the religious-type comments - some find them very very comforting to think that their loved ones are still in some way around, be that in heaven or nirvana.
And the footprints poem - some hate it, some don't.
And if anyone had dared just turn up at my door uninvited to cook, clean etc, I think I would have throttled them - I am a very private person, and I would have found it hugely intrusive not to ask me first.
So it is very very much down to the indivual.
The need to say something, however, I think is a given. Also to not avoid those who are grieving when they try and make contact. And to acknowledge and apologise when something insensitive is said and done, and understand if that person isn't in a place to forgive you for it immediately. Its human behaviour to say and do dumb things sometimes, and its also human behaviour to be as mad as hell about what has happened to you and lash out at all and sundry when in the raw stages of grieving.