When people are using Kirk in hypothetical trades I think they understand you need to give up value to get value.
Of all the catchers Kirk presently has the most value. He projects as one of the best hitting catchers in the game and has proven he can at minimum handle the position.
They just so happen to have stud defender Danny Jansen and super prospect Moreno waiting in the wings which makes Kirk expendable.
Kind of like how the Marlins have so much good young pitching they don’t know what to do with it. Using the surplus to address other holes makes sense.