Given many of us may here be quoting from the same book but I'm another one whose company ops manual quite clearly states that there is no requirement to ensure all taxi fuel is burned prior to commencement of the take off roll provided any possible weight exceedence is "considered minor" (not defined).
I haven't quoted the two line rule verbatim apart from the two words in quotes but nevertheless the policy is clearly worded and as far as I see not really open to being misunderstood or misconstrued. Now how the company squares that statement with the requirements likes of EASA, and the numbers Boeing and Airbus publish I will leave for further discussion.......