I'm not blaming anyone; I just find it surprising that this detail wasn't mentioned or explained. Its omission makes the article less trustworthy to me.

People are fast to pull out pitchforks in response to outrage-bait posts like this, but (generally speaking) a nontrivial percentage of such posts are intentionally omitting details which can help explain the other side's actions.

Also I genuinely wasn't familiar with this specific use-case for gift cards. At least in the US, you can buy general-purpose prepaid debit cards for this type of thing instead, or use various services which generate virtual cards e.g. privacy.com. To me that seems infinitely more normal than buying a large-value "gift card" for yourself, but I'm admittedly not familiar with the options in other countries.