Exceeded venting may become an unhealthy pattern, originating in one's deep inner-problems.

The unconscious craves connection, any connection, but one does not feel capable of communicating normally, and has learnt that 'venting' is also a way of communication, and, in a sense, a fullfilment for the unconscious need.
Why unconscious ? Well, I would feel a bit guilty if I were consciously seeking attention with venting.
This is unhealthy because I'd automatically start venting all the time, creating content for venting because this is the way I communicate or something ...

This is just a perspective guys
I'd sometimes check if I start developing this habit, usually happens when I'm cycling down hard.. but then, the only place I vent is my therapist and online, as I don't have energies to actually meet/see people.