threads like this reveal who the professionals are out there vs the hobbyists. Any cabinetmaker, finish carpenter, etc knows this is done CONSTANTLY on jobsites and shops all over. For those that have been using the tablesaw EVERY DAY for over 20 years are safe freehand cutting to a scribe line. Hobbyists that use the T-saw a few hours a week since buying it last year - very different comfort level - very understandable. We pros also know not to freehand a scribe line that is in the middle of of a thick plank, foam, lexan, or other sheets that are notorious for binding. Edge of 3/4" poplar? Easy peasy.
No one is really right or wrong here - its all situational. Maybe since ATOH is targeting DIYer's, then it might be wrong.
john.blazy_dichrolam_llc
Delta Unisaw, Rabbit QX-80-1290 80W Laser, 5 x 12 ft laminating ovens, Powermax 22/44, Accuspray guns, Covington diamond lap and the usual assortment of cool toys / tools.