Logically AirBnB valuation just shaved off 10 -20 Billion dollars. I cant see how any bank with their investor pool wont be holding back on top valuation. It wouldn't be fair to compare this new pandemic / AirBNB ma...

Also, they feel the current valuation of the commercial property is no longer fair market value compared from the beginning of 2020, pre-covid-19.The Seller's are obviously not happy to hear of the news, and most definitely will not agree and accept a 20%+ devaluation of their commercial property.

Financially speaking, for example, paying off your primary home is stupid because of the devaluation of the dollar over time.

That would allow you to devalue future principal paid (granted at the expense of greater interest expense), but would also give you flexibility to pay back the loan at a lesser amount if needed.

I hate the SF rent by room model as an investment because it devalues your own personal space.

Due to the CARES Act, the 10% penalty is being "Waved" in 2020 assuming you meet the loose requirements that they have.Any individual who has experienced “adverse financial consequences” because they’ve been quarantined or furloughed, or because their hours at work were cut.Individuals who haven’t been able to work because they’ve had to stay home to take care of their kids.Business owners who have had to slash operating hours or shut down due to the outbreak.Basically the Fed's are printing money at an alarming rate which in turn "devalues" the dollar. 

I agree with @Robert Eyers about not devaluing the deal with cash flow showing slightly negative patterns versus a stable cash flow positive.  

At some point though, that money would have to devalue the dollar.

So what type of firearms should I purchase to hold while my cash is devalued in my bank account? 

Charging below market rent is not only leaving you to supplement your tenants rent it is also devaluing the resale of your property.