is white light “white” because that’s what our start emits?

I’m going to say “no”. Just because humans only see in the “visible spectrum” doesn’t mean that all life on Earth does. There are creatures that can see in infrared spectrum such as:

• Snakes like pit vipers, including boas and pythons
• fish such as cichlids, goldfish, and salmon
• Mosquitoes
• vampire bats

There are also creatures that can see way past the other side of the “visible spectrum” into ultraviolet

• Bees like Bumblebees and Honeybees
• Butterflies
• Reindeer
• birds like European Rollers
• Scorpions
• Hedgehogs
• even dogs and cats

So as you can see from these lists its not just a specific genus or species. Many of our mammalian cousins can do this. Given that many other species have evolved this ability, it just wasn’t evolutionarily needed for humanity to survive.