Given that this is an issue for some people (the reasons don't really matter) simply amending the message to 'Hey, are you available to talk *about X* ?' shouldn't be a big deal.
It's not so much anxiety-inducing for me, personally, to get an ambiguous "can you talk?" message, but it is infuriating to be distracted by a content-free message like that in a chat. It's essentially a waste of my attention because the other person is being inconsiderate and lazy to not even bother adding a few words. I always just automatically reply "About what?" at this point. If the other person can't even be bothered to articulate a few words to say what it's about then they deserve nothing more than an automatic reply.
Given that this is an issue for some people (the reasons don't really matter) simply amending the message to 'Hey, are you available to talk *about X* ?' shouldn't be a big deal.
It's not so much anxiety-inducing for me, personally, to get an ambiguous "can you talk?" message, but it is infuriating to be distracted by a content-free message like that in a chat. It's essentially a waste of my attention because the other person is being inconsiderate and lazy to not even bother adding a few words. I always just automatically reply "About what?" at this point. If the other person can't even be bothered to articulate a few words to say what it's about then they deserve nothing more than an automatic reply.