Sure, but deferring collection requires increasing memory use. Since the OP was discussing microcontrollers, that's generally not desirable because memory is in short supply. A 1ms GC cycle is totally tolerable for most microcontroller applications though.
I was responding to your statement regarding “on desktops and servers”, which I believe doesn’t quite represent the state of the art anymore. I certainly agree that 1 ms is already pretty short.
