The answer to 'why is my surge protector dimming lights' is that a malfunctioning surge protector can cause the lights connected to it to dim or flicker. This is often a sign that the surge protector is not functioning properly and may need to be replaced.
Surge protectors are designed to protect your electronics from power surges, but if the internal components fail, they can start to interfere with the normal flow of electricity, leading to dimming or flickering lights. This can happen over time as the surge protector wears out or if it was exposed to a significant power surge that damaged its internal components.