I think Keef has it right (God bless you, Father!) regarding the legal risks that we should calculate, and that aspect won't stop me flying (there's not miuch that would, other than bad wx!).
However, what I am concerned about is that we may unwittingly run safety risks, as opposed to legal risks due to, say, lack of availability of NOTAM info when the site is down, and/or omission of some information in the NOTAM briefing for whatever reason, such as blundering into an Air Display or PJE that might have been avoided.