Not if they are starving. Starve now for sure, or starve later after getting paid - pretty easy choice.
My estimate is zero. Which makes your comment irrelevant to this discussion.
If you haven't met any that's ok
The person signing the legal documents is the engineer himself, not some "vagabond" retained by a lawyer. Evidently you are not familiar with how signoffs by engineers of record for things like bridges are actually done.
During the housing bubble, they'd just hire temps to sign things: https://www.reuters.com/article/robosigning-plea-idUSL1E8ML0...