The flaw here seems to be that the US government doesn't pick up the landlord's tab for a broken military lease, and - like it or not - that incentivizes landlords to rent to civilians with good credit scores.I'm sort of reticent to continue this chain because I don't want to sound callous, but I do worry that I vastly over-estimated my return in this area.

If it is a major re-build it could take a couple weeks, and with supply chain difficulties, much longer2-5) Your departing tenant should not be expected to make the unit as clean as you would for an incoming tenant. 

But that doesn't change the fact that the dollar is a much better currency than gold, bitcoin, Ethereum, Yuan, Euros, Yen, Pesos, or Rupees.

Low interest rates, influx of money (inflation), remote work, supply chain problems...What happens when demand falls?

Just the prospect of simplifying the chain of title by registering the deed on the blockchain as an NFT will eliminate any uncertainty and the need to do any extensive title searches, obtain title insurance, etc. as it will all be public on the ledger.  

Does that mean you would only need to track chain of title back to the last grant deed that was issued title insurance?

Question for homebuilders, contractors or rehabbers,Are supply chains getting any better? 

Climb as far up the chain as you can.

It seems like gas prices are settling, and I wonder if supply chain issues are slowly getting resolved, the jobs market is starting to cool off a little bit, and I think real estate prices (but not necessarily rents) will start flattening out a bit.

The rest of it is gold - get your mind right before you do anything else.