I submit that “churner” is as difficult a word to define with widespread agreement as “alcoholic”. There are degrees of churning and it can be qualitative or quantitative. Get 1 new card every 2 years just for the SUB and then sock-drawer, churning. Get several new cards per year, most definitely churning. Get more than 1 of the exact same card, churner. Have 2 standard deviations more total credit cards than average, churner.
Go ahead, admit it, that’s the first step toward recovery

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“AI Overview: The average American has around four credit cards:
Experian: According to Experian, the average American has 3.84 credit cards.
CNBC: According to CNBC, the average American has four credit cards.
Credit.com: According to Credit.com, Americans had an average of about four credit cards per person in the third quarter of 2020.”