Not sure what device this comment was relating to… But it doesn’t affect this build.
The L2 data is sent to the TV as is. The steps files in that folder show a very obvious response for values over 2048.
The benefit of differing from other devices (including the ‘official’ CoreELEC builds) and transmitting the L5 metadata is also very obvious in the ‘proper’ files from that folder - the letterbox areas do not brighten when the L2 trim offset is increased over 2048.