I don’t think that’s exactly fair, the term did get coopted by right wing anarcho-capitalists, so its had a pretty significant semantic shift from its left wing social anarchist origins.
There’s still left-libertarians in the world. You just have to specify now that anarcho-capitalists have appropriated the term, rather than pretend that no elaboration can possibly apply.
Having to be more specific when referring to other kinds of libertarians because of definition drift is annoying, sure, but it hardly makes the term meaningless.
I agree, but I think its also fair to expect some confusion around the matter.