But if they haven’t confirmed an ID as specific as yours, then that isn’t agreement either, hence the two options given to distinguish why a higher level ID was provided.
c.f. https://forum.inaturalist.org/t/inaturalist-wording-for-potential-disagreement-promotes-fist-fights
I agree that discussing it is a healthy next step if the reason they’ve done what they did isn’t obvious to you, but in my experience a lot of the most knowledgeable identifiers will simply do this without a comment, but be very happy to explain in further detail to anyone with a genuine interest in understanding more.
There’s pros and cons to both those ways of doing this - but if you tell all those people to paste a boilerplate explanation every time they do this to an observation, then you’re just going to have “excessive repetitive comments from people who ‘agree’ with you” flooding your notifications instead :D