There are common properties of phycology shared by people. UI design and ergonomics rely on such properties. In psrticular, how people read text.
But I am speaking of myself only. From experience receiving well designed message comparing to the experience with badly designed messages.
I am a data point of evidence supporing my view. The opinion that "people don't read" is a complete speculation, without convincing evidence.
The real problem that many services simply not include the warning in the message.