Yeh, projector headlamps tend to be a lot better, but they're still not always perfect, and so still suffer scatter due to the differing focal points between the two types of lamp. You can often improve things by dismantling the unit and spacing the reflector bowl away from the lens, or alternatively spacing the bulb back from the holder slightly.
Passing an MOT or even a police stop check doesnt mean the lights are ok, it just means they didnt notice any issues.
Same only goes for airbags if you still have the original equipment to resistorise/stealth.
My track car project has no carpets, no airbags, no airbag wiring, no airbag ECU etc etc.