No adverse action notice would be required.
Would it not be required because the debit card is not a "credit" product, or because no outside information was used for the decision? I'm not sure from the response.
Also (long hypothetical coming), if the account does not have an overdraft feature, but adding the debit card would add that feature, and the customer was being denied a debit card because they did not qualify to be able to have overdrafts, would that constitute adverse action?