charlie would still have the option of opting out of community ID, which would keep it at species level. Or, if he gives more context in a comment then there’s a good chance identifiers will withdraw their IDs.
I think regular identifers should know that charlie, for example, is experienced with plant ID and probably knows information about the plant that isn’t presented in the observation and would pass over the observation or add a “green button disagreement”.
However, if an identifier sees an observation identified as the same species, but with the computer vision symbol and from a user with no profile description and only a few observations, they can probably assume that the observer has no idea how to identify sedges and just chose the CV suggestion. There’s a wide grey area between and there’s been lots of discussion on how to deal with that.
There’s a major bias for newer observers and even more experienced ones to identify to species level when that’s often not appropriate. The orange button is the best way to address that false precision, but identifiers have a responsibility to follow up if it turns out the species ID was realistic.