You’re correct. The speed of light is not actually about light. https://youtu.be/msVuCEs8Ydo https://youtu.be/msVuCEs8Ydo has a great explanation from the alwa

You’re correct. The speed of light is not actually about light. https://youtu.be/msVuCEs8Ydo https://youtu.be/msVuCEs8Ydo has a great explanation from the always excellent PBS Space Time, for the curious.