Complain all you want about Thai riders and question the number of accidents but I believe the figures mentioned are probably higher, the tourists have NFI how traffic flow works here, the majority of them (tourists) NEED to pass everyone and be first in line.
Like it or not, for Thais and long term residents there's an understanding of how the traffic moves and what's expected at pinch points, the tourists understandably don't and as a consequence have accidents.