Boundary crossings and boundary violations are different things. You can cross a boundary without it being a violation. I believe violations are unethical, whereas sometimes crossing a boundary can actually be helpful to certain clients? It seems up to the therapist to determine whether an individual client would benefit from a boundary crossing, at least that's what I took away from reading the BACP ethical framework.

Of course the client's personal boundaries is a different matter, as they can be very individual and specific, and sometimes the therapist has to discover them by crossing them. Some of the examples here sound more like violations, though, like repeatedly asking intrusive questions when the client is obviously uncomfortable with it, or distressed by it. Any therapist should know not to do that, in my opinion.