That's exactly what I'm saying. If you run my proposed scenario on a hypothetical rent of $10k a month then it becomes "which is greater 80% of 10 or 100% of 0" do you want $8,000 or $0".

"You might as well get what you can out of them." might mean lowering rents.

I think that's the difference. I'm saying they're going out of business anyway and you're going to have to line up with the other creditors. The question is whether you get $8000 for 4 months and zero after or $10000 for 4 months and zero after. You lower your rent and you don't get more because your tenant is going to die anyway. It's a no-brainer.

I have a friend who started a bar in the past 2 years and his landlord reduced his rent to 0 during the peak of the pandemic. He's still afloat.

He also said that if his landlord had charged him his full rent or would want the full rent paid back he'd go under.

Sure, if I made it sound like I meant "There is no instance where it makes sense to not eat your customer alive" then that is not correct. I am certain these cases exist.