Twitter was being used to disseminate malware and addressed it in a way that hurt another platform without fixing their own. JSFiddle took a reasonable approach that did not affect Twitter and left their product offering intact while punishing bad actors. Twitter slapped a “JSFiddle bad” band-aid on the problem that does nothing to address the problem of Twitter being used to spread malicious content. Instead of using their size to do more Twitter uses it to do less.