How often do your purchases get falsely marked as "fraudulent"? (by either the financial institution, or merchant) Do you get mad when they do it? - Divisions by zero

I fucking hate this shit. Especially when the retailer does it. Like wtf dude, why do they care if its someone spending their money legitimately, or if its stolen, they get money either way. Is this some weird “we stopped fraudsters” PR campaign? I’m wondering if the “@protonmail” or just non-Google emails they hate.