Good to have choices. I see therapists who admit it.
It also, from their literature, seems they see a difference in what they think clients should take literally versus figuratively.
So a therapist says "I won't leave you" and means within a reasonable set of circumstances and the client means ever.
For me, I can't imagine why it would be useful to have a therapist remember me after I quit them.
I don't think they will and can't come up with a reason why they would.

OP - I think if therapists decry the practice when talking to clients and justify it when talking to each other.