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.
Fortunately/unfortunately I still can't load the site on any device or browser so I'm not actually sure what it looks like or how obvious it is.
If we start predicting that they will, we've turned the internet into minority report. Just because people are jerks and making money off deceptive ads doesn't specifically mean they're going to start serving malware.. it just means they're jerks.
Not all third party download sites are evil. But this one is in the veru dark gray area. It is correct to report it now as a threat before something bad actually happens.
If you report it as distributing malware when it doesn't it's just crying wolf, and will only take up time from actual malware reporting, or make this less likely to be classed as malware in the future if/when it does distribute it.
Reporting it as trademark infringement to the hosting provider under the DMCA is most likely the best course of action, the one most likely to lead to a take down. That's assuming there's a trademark on Notepad++.
Anyone being long on the internet has seen such things happen more than enough, so many people have a legitimated lack of trust against those sites.