I think Lacanian theory showcases a notion of "theory" that is worth being familiarized with. Ordinarily "theory" in humanities/philosophy etc. is equated with "critical theory"; but Lacan's bogus theory of psychology and Althusser's bogus theory of economics share this sense of "theory".
I think there are many shades to "bullshit". From a scientific, objective point of view, all of this is bullshit -- I'm a STEM nerd by day and I have that point of view.From that point of view I'd have to see extraordinary evidence towards methods like Anna's or Melanie Klein's (or Kohut, or, or) making any sense at all. That's a sense in which I reject Freud. The sense in which I accept Lacan is something very different.