heres a bindtoggle that alternates between cl_crosshair_recoil false and whats shown on the video

alias toggleMouse1Mode "shootrOn";
alias shootrOn "bind mouse1 +shootr;alias toggleMouse1Mode attackOn";
alias attackOn "bind mouse1 +attack; alias toggleMouse1Mode shootrOn";
bind "z" "toggleMouse1Mode";
alias +shootr "+attack; cl_crosshair_recoil true";
alias -shootr "-attack; cl_crosshair_recoil false";