We all experience transference / counter-transference to a certain extent in relation to people in our lives. Within the therapeutic context, this is the jargon that is used.

Should it be discussed with all of these protagonists? No. Not necessarily. It might not even be the best thing to do. It could certainly do more harm than good.

I disagree that IF a T were aware they were experiencing counter-transference, then it should immediately be addressed with the client. This seems 'dangerous' and making it about the T's feelings and agenda rather than focusing on what the client is bringing in. Pretty unethical too.

What is recommended is to delve into the murkiness of the T's feelings with a supervisor. This is what these (e.g. supervisory or peer group consultations) are for.

Another point of contention is that not ALL theoretical models or approaches to psychotherapy even believe in counter-transference. So, it is unrealistic to expect Ts not versed in one model to use said model in therapy.

Same as for medical doctor or greedy lawyers who specialise in one field and don't necessarily have 'expert' knowledge in other fields. Likewise, it is unrealistic to expect a T to 'specialise' in other domains

Therapy is not a one size fits all or a 'one model for all'.