People
A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal.
— Oscar Wilde

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The statement reverses the usual praise of sincerity by calling a little dangerous and a great deal fatal. Its escalation makes the judgment deliberately extravagant. Rather than explaining a particular consequence, the wording turns increasing earnestness into an increasingly alarming prospect, creating a sharp, unsettling paradox.
Context reviewed