I didnt see that you are using Unity. u-s-d also launches syndaemon with the "-t" option, which means motion won't be disabled, just clicking and scrolling. Perhaps the "Synaptics Off" patch would help, atleast on supported hardware.
I am not sure that Unity7 has been ported to use libinput, I suspect not and clearly that would not be an option for LTS.
I didnt see that you are using Unity. u-s-d also launches syndaemon with the "-t" option, which means motion won't be disabled, just clicking and scrolling. Perhaps the "Synaptics Off" patch would help, atleast on supported hardware.
I am not sure that Unity7 has been ported to use libinput, I suspect not and clearly that would not be an option for LTS.