The article puts it up as a question about whether this practice is worthwhile since the only logical solution to climate change is to de-carbonize. Personally I think that question isn’t very nuanced, certainly de-carbonizing 100’a of tons from the atmosphere from just this one plant is a small net positive. Can’t let it be an excuse to keep rolling coal in your F750’a but I’m still in favor of sucking as much carbon out of the air as we can.
If you had a magical machine that was powered at 100% efficiency by thermal fluctuations in the air that could suck carbon from the atmosphere at whatever speed you wanted, you would change the climate by the thermal differential you’ve created before you would seriously impact the amount of carbon being thrown into the air each year.
Exactly as you said, there’s no other option than to simply stop burning this stuff.