A Lieberma wrote:

If it's an IFR plane in front of you, you won't be cleared for the visual
to an UNcontrolled airport until that plane cancels his IFR.

An uncontrolled airport is literally shut down for IFR arrivals until
that IFR cancellation is received by the plane in front of you. Thus the
courtesy / importance to cancel as soon as you can so the person behind
you won't have to hold.


That's not correct. Visual separation can be used between multiple
aircraft conducting visual approaches at uncontrolled airports.