I wonder if infrared LEDs (not seen by human eyes - but which desense camera sensisivity etc etc) flashed on/off at a high and rotatingly variable rate mich red

I wonder if infrared LEDs (not seen by human eyes - but which desense camera sensisivity etc etc) flashed on/off at a high and rotatingly variable rate mich redcuce how effective these cams work? Of course, IR filters on cameras would occur soon enough?