If he and I are thinking the same, it will be like "wow, this is all too difficult". It's quite sad to admit but as time goes on, even being fully vaccinated for months, it seems to be harder to come back to Australia to simply see aging parents for a few days, then get back to work/home/life/etc in US.
I completely understand the points raised about depression, it's a real thing.
Living overseas pre covid was acceptable... you could come back to Australia on a whim for however long you wanted. Heck, I've travelled US to AU for one day to a surprise birthday party then returned back, it's that freedom that makes living overseas acceptable for me.
I'm not saying it's unbearable now, it's just quite ridiculous for fully vaccinated expats being unable to return to Australia in a reasonable fashion.