I agree with everything that you say... I was just pointing out that
saying that someone installed the wrong GFCI because it's "20 AMP"
isn't necessarily a true statement.

** When it's installed on a 15 amp circuit, it's a correct statement. When
an electrical receptacle is referred to as 15, 20, 30 amp, etc. the
reference is being made to the devices configuration, not it's pass through
capacity






Most GFCIs w/ NEMA 5-15R
receptacle(s) are still rated @ 20A because 5-15Rs are permitted on a
20A circuit and it is often convenient to use a GFCI recep as the
first one in a "string" rather than using a GFCI breaker. But if it
has a true NEMA 5-20R recep then it was the wrong device but not the
cause of the problem.

nate