If we view it through the lens of him actually wanting Putin to win and Zelinsky to lose because of personal insult its even easier. He merely needs a pretext to stop support. Zelinsky can pick between a pretence of peace followed by Russia regrouping and crushing them and total capitulation.
Easiest way is to front load so many demands that they never sit down. The important thing isnt even so much Russia winning as much as getting to snub Z.
His actions being that of an ignorant 4 year old rollin on whatever he was told last makes him easier to comprehend
Most places are around 1% of value with many having caps on increases in value or other differences in taxed and actual value. This means his house is worth 1,000,000 to 1,600,000
If he was really living on 24k he wouldn't be able to pay 12,000 in property tax. He bought when it cost almost nothing and spent most of his life paying neither rent nor mortgage unlike most of us and has a reasonable retirement.
He could at any time sell and live better than you or I even if he didn't have a dime other than the house. Instead he uses his time to whine about his good fortune.