Clean energy isn't fungible. Energy created in Iceland can't easily be used in India.
If you can create energy in Iceland, which is already nearly 100% renewable for electricity generation, then using it for carbon capture is carbon-negative.
If you're claiming it isn't carbon negative because someone somewhere in the world is burning carbon, then the word is meaningless, because you may as well claim that every activity on Earth is generating the exact same amount of carbon -- the average of all the activities.
If you can create energy in Iceland, which is already nearly 100% renewable for electricity generation, then using it for carbon capture is carbon-negative.
If you're claiming it isn't carbon negative because someone somewhere in the world is burning carbon, then the word is meaningless, because you may as well claim that every activity on Earth is generating the exact same amount of carbon -- the average of all the activities.