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I'm at a loss here as I can't understand your point. If a post is removed by the admin for whatever reason, both the post and every comment on it would have been deleted with nothing left of the post. In addition, if a post is made here and it contains malware, unless people click on the link to the malware itself, I do not think they can be infected by simply opening the post made here, if such is possible, all of us would have been carrying loads of infection already. If you can clarify further, it will help a lot as it seems I'm not getting you clearly.
It pretty obvious that what OP is trying to say is that some threads with malware links are not entirely deleted but only the link itself is removed by the mods, so what he's suggested here is that a large warning ⚠️ just like those placed on someone with multiple red tags are obvious when they create thread warning to trade with care with a user, it should be made same with a thread that has a malware link on it that if opened a warning is issued to anyone who opened it that if you have clicked on the link that was in the thread you should be careful that you might have been infected before it was removed.
With this OP in my opinion is trying to inform people who must have used a malware link without noticed before it was discovered to be malware link to do the necessary because they already clicked on the link.