The original rim had little coil springs that pulled it up flush
With basic installation, these would not seat flush to the ceiling but were seated about 1/4 out
Plus these are $40 for 4 whereas smart bulbs are $40+ just for one
(In CA the orange plug must be plugged directly into an LED specific can light in order to be inspection approved - they cannot be screwed into a socket)
Screw in the socket on this fixture3
These have springs than hold it in the can, but do not pull up