Quite helpful to give awareness for people to report various scams that exist in our market. Some reasons I see why people won't take the extra step is because; [1] They have no knowledge on where to report such thing especially when related to crypto-space, [2] They don't want explaining and going through stuff they don't know about, or [3] Even if they report it, they expect no action and resolution from the institution that'll make scammers liable for their loss.
If we have the ability to analyze a site that is indicated by a scam then it is very good to help fellow laymen. And I totally agree with your description of those who did not report, I personally feel that. I do not have the special ability to analyze such things, so when there is a question as to why a scam is indicated, it is difficult to explain, except for phishing sites that clearly duplicate the original site, that I can only find easily through official accounts that are available. And I'm lucky to be able to get updated information about phishing site cases in this forum, and some caring members will definitely create a warning thread.