Video here
This was a band that inspired a thousand other house bands, Was there in the early 90s at the start of the House/electronic experimentation in the French underground, got an animated film done by Leiji Matsumoto and won several awards with their album in 2013. So yeah, it's sad to see em go.
As to why they'd break up, Rumor has it that they broke up because one of them was developing health issues with hearing (tinnitus) and didn't want to hold back the other one because of it… which is also why they haven't done anything, neither tours nor new albums, in ages.
Didn't they also have a fair number of arguments over the years? Couldve sworn that there were rumors of them wanting to break up for a long time now.