This is a massive potential accident in waiting as far as I can tell. ATC have no idea how high an aircraft will climb, aircraft have no idea about potential conflicting traffic.
It’s another example of relying on the final layer of defence to avoid a mid air collision. If the FAA had any sense it would legislate an SOP that everyone adheres to so all parties know what will happen in the event of blocked comms during a missed approach following a visual approach.
LD