Of course, if it leads you to leave your spouse, sell your furniture, quit your job, and use your home as a dance studio, and spend all your savings on instruction that points to an obsession that is self-destructive. But I've never met anyone like that.
I know at least six if "accepting the end of your relationship, quit/reduce your career, downsize your home, and spend all your income on instruction and tango travel, and trying to create and live of some kind of tango related income stream (selling tango supplies, doing tango tailoring, tango teaching, tango organizing, tango art, tango anything)" is sufficient. And if i count traveling teachers i have met dozens.
So, yes, I think there a quite a few people who structure their life around tango, but i really don't think tango is all that special and unique in that respect.
How well their personal investments scale with their achievements in the field, and if it is healthy are very different question, but i would argue that tango is not worse than other folkloric/historical arts and crafts.
