There's nothing right or wrong about transference: it simply is a psychological construct that often exists. Some therapists view transference as the heart of therapy, and use it as the focus of therapeutic work. Others view it as less important, perhaps as an interference, and negate it as much as possible. Depends upon the therapist and his/her orientation to therapy.

Isn't transference all about getting what you didn't get when you were a child, so that you can move on?

Yes and no. If the therapist believes in working with the transference, then healing does involve working through the deficit, arrest, or trauma that the transference reflects; after which, development can proceed uninterrupted.

But that's not necessarily the same thing as getting whatever you didn't get as a child. I think as adult clients we forget that childhood naturally involves a great deal of frustrations. We usually don't remember them, whereas we experience them acutely in the present as part of the therapy process. It isn't always appropriate for a T to relieve those frustrations, anymore than it is appropriate for a parent to always relieve a child's frustrations. If either does, the growth process can be retarded.