Depends. First of all u can't shift fake commands tru the cl_move
If we are talking about teleport double tap, it depends on where you feel more comfortable
when you are shifting tru the cl_send_move/write_user_cmd_delta_to_buffer/send_net_msg etc....
u must
do this by yourself, write user cmds and run prediction on them...
but when you are shifting tru the cl_move
you are just spamming with cl_move by setting second arg ( final_tick ) to false so
became false and
make cl_move execute commands instead of you