does this mean you can also use this form of downvote to like report a content that seems malicious but then not sure of? For example I feel a content is plagiarised, I'll use this downvoted to like sort of raise an alert?
That is correct. You could downvote a de minimus amount if you suspect the content is plagiarized, then you can always increase the amount of your downvote later, if your suspicions are confirmed.
You would not need to state a reason for the de minimus downvote (but you are welcome to). A larger downvote would need to state the reason.
Wow, this is good, I do believe it helps to forestall clarification of some sorts, truth is, there should be a procedural process through which a tribe can work by and this is actually very important. Hopefully these proposal can pull through.