The internet has far more beneficial uses than malicious uses. We currently can't say the same with cryptocurrency due to its diminishing utility.
E-commerce platforms were never the target anyway
What's the use of money if not for paying stuff? In the early days, a lot more shops (online and offline) accept crypto payments. These days it's mostly vpn companies that accept them.
Scams are not much affected by cryptocurrency existence, but ransomware existence specifically relies on crypto for scaling reason. They infect millions of computers, the ransoms are being handled automatically because it's way too much to be handled manually with gift cards.