Even if @rINanDO replied already while I was still taking screenshots.
It's safe to use and button lights are now working within their regular use. (just brightness not working yet)
So even without bln-mod you can now control again the timeout by the settings-menu.
What he did was to remove BLN support to completely rework on it.
So if you used it so far be prepared to currently see errors in Synapse.