I've posted several times before to state that I have no concept of grief, so it would be hypocritical of me to suggest that I really understand how those people might be feeling.
However I can see that some people cope with loss by crawling into a corner and weeping, while others hold a massive wake with loud music and plenty of booze. I can't see that it's for me, or for anyone else, to say that one way is better than the other.
So, if someone thinks that getting a house makeover is the best thing for them, I can't see that anyone else should object simply because it's not they way that they'd do things.