Does a cracked car front bumper need to be repaired?

[McPresley]

Does a cracked car front bumper need to be repaired? The steps for bumper repair are: 1. Remove the bumper; 2. Align the bumper crack and secure it with transparent tape; 3. Plug in the soldering iron, flip the bumper over to inspect the internal crack, wait for the soldering iron to reach the appropriate temperature, then use it to melt and fix the internal crack along its direction; 4. Weld along the crack with a PP welding rod using a plastic welding gun; 5. Remove the transparent tape used for the bumper crack, go over the crack with the soldering iron again, sand the area treated with the soldering iron and areas needing touch-up with 400-grit coarse sandpaper until smooth, apply putty, and let it dry; 6. Sand with wet coarse sandpaper, then with fine sandpaper until smooth, rinse clean, wipe dry with a clean cloth, and let it dry; 7. Apply paint; 8. Let it dry for a few hours, then reinstall the front bumper panel.