You are correct in your common sense test, the article is not correct.
Check out the Concorde wiki[1] It states ~4.4K lbs for taxi which passes the common sense test. Taxi time is generaly planned as 15 minutes, so ~10K lbs/hr which is more than what a Boeing 767 burns at cruise - quite a lot! For comparison Concorde super sonic cruise fuel burn was 40K-55K lbs/hr.
For another reference Boeing 767s typically plan to burn 2K lbs of fuel for start-up/taxi/takeoff run.