Why do I not find this surprising.
https://www.nationalreview.com/news/credit-card-companies-gun-purchases-tracked/
While the companies have not finalized any policy changes, they are discussing the possibility of implementing purchase codes for gun retailers, similar to those linked to credit-card purchases at restaurants and department stores. Another policy that is reportedly under consideration would require gun retailers to share with the companies information about what specific products consumers are buying.
https://www.nationalreview.com/news/credit-card-companies-gun-purchases-tracked/