If you want to set up your outdoor furniture, by all means do so. If he comes back w/some nasty comment, just say...as long as we are in a stay at home crisis, I would very much like to be able to sit outside and enjoy the weather.
His comments are just his way of venting and yes, to buy you to death. When something pops out of his mouth about the divorce, just say "h, I am sorry you feel that way" and walk away. You do not need to listen to his spew.
As to your poll, I wouldn't say a word. I would just sit back and watch/wait. He may be taking his frustration out on the "stuff" and felt like he needed something to do...but most likely most of that "stuff" will remain in boxes and not moved.
If you don't want to rush the process, then do not engage in conversations about his lawyer and where everything is at the moment.
Dig deeper for patience, walk away when he starts talking about the divorce and one more thing, try to sit quietly..the answers will reveal themselves in due time.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.