There's a blurriness, but it's still pretty workable. You won't ask someone to look at a problem by sticking eyes on it, that needs a lot more communication.
But you can look at an issue, see there 3 of your coworkers sticking an eyes emoji on it, and mention them when asking what they think it, get clarification if they've just seen and didn't care, are still digging deeper etc.
In a way, the imprecision is what gives the versatility, otherwise many emoji get a more limited, standardized meanings over time. Like a "done" sticker that will be enough to give a status on a request on a channel, a thumbs up on a proposition, or a green checkmark on things that explicitely needed to be checked.
