The remedy for piracy should never be punitive on the consumer, or it does exactly what happened to you. Even more ironic your story is probably encouraging others to pirate rather than have a discouraging effect on the market by 'making an example of you'.
Great job as usual, Nintendo management 🎉
Google Ads allows ad-buyers to pay a little more to target the demographics their ads get shown to, the more granular the more expensive.
So these scammy fake virus bastards just pay to be advertised to 'over 60s', 'ads trigger for keyword: antivirus / virus' and geographical target to countries with a wealthy boomer class like USA, UK, Australia, etc.. Then wait for the clicks on their scam to come flowing in.