If you are paid in dollars, you would then try to get rid of them as soon as possible, either through exchange for things or for bitcoins. So with that knowledge in your head you are first of all spending all your dollars...
But if I get paid every two weeks on Friday but I spend money every day. On Friday I'm going to convert
all my dollars for bitcoins. The next Monday I'm going to spend my bitcoins directly, if I'm able to.
Or maybe I can convince my employer to pay me in bitcoins directly. Then I can avoid ever touching those icky dollars.
So what's the problem? Holding bad money (depreciating dollars) would likely mean losing purchasing power, which you could preserve if you held good money (bitcoins) instead. In your case that would be the time period between this Friday and the next Monday. The extension still standing firm...