You're right, except for the last sentence. Lack of financial literacy has some levels. One could refuse to use Credit Cards because they don't perceive the benefits (point programs or cashback) they could individually attain, but one can also refuse to use Pix because "I only have to pay my credit card invoice once at the end of the month and can spend without worries during the month" (which is even dumber, but is the reality we're living on).