Interesting way to search for jobs. I feel a bit weird though in that I'm drawn to jobs more based on the business domain and problems being solved than the particular technology used for the implementation. Getting asked 'what is your stack' always felt like a weird lead in vs. what problems you are solving day to day, but I feel mostly alone in this sentiment...
These people are often labelled as the "pragmatic". They also lean towards having a more general scope of knowledge and thus often lack a "speciality".
There are also those that simply wish to solve the problem in the "best" way possible, and will use whichever stack gets them closer to that ideal solution.
disclaimer: purely based on my experience/opinion/perspective.