It can also... not deliver malware. The point at which it would be of interest to Safe Browsing would be the point at which it starts delivering malware, and reporting it before then is only going to create false positives that could make it harder to report if/when it did start distributing malware.
The Safe Browsing project is not about judgement calls on whether a website is a good citizen or not. The whole point is to have a global database of obviously bad stuff that is not about any sort of editorial control, curation, etc. That way it's a clear win for browsers to implement, and there's little criticism that can be levelled against it for preferential treatment etc.
Cloudflare's Radar seems to have a different scope, and may be a more appropriate place to report this site.