Reports become test cases the matcher is graded against before an update ships.
Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math,
and examples like yours decide which differences should count.
Mechan Shieldmate100%
$0.05↓#218780.15↑1.1 years↓
"As long as an artifact entered the battlefield under your control this turn, this creature can attack as though it didn't have defender."
+1 more matching line
turns-off-defender-self, artifactfall, drawback
Thraben Gargoyle // Stonewing Antagonizer95%
$0.12↑#218690.31↑10.4 years↑
"Defender"
turns-off-defender-self, drawback
Krotiq Nestguard94%
$0.07↓#239130.041.4 years↓
"Defender"
turns-off-defender-self, drawback
Ludevic's Test Subject // Ludevic's Abomination94%