It has a reason to exist and it is somewhat functional as an anti-imperialist "outpost", i think that under a certain lense it's a good example to showcase the "independence for me but not for thee" western approach to non-western aligned separatism. Highlighting the media treatment of transnistria compared to the one of places like Kosovo is at least somewhat useful in certain debates.
This said, it's essentially a corporatocracy. The power belongs to industrial conglomerates like Sheriff and the president is whoever them and russia can agree upon. It's not really a desireable form of government.
Bonus points for the flag tho