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This is sadly not a surprise. Any carbon capture project that doesn't involve trees is guaranteed to be a money sink and little else. Any process that pulls carbon out of the air is going to be an energy intensive one. Which means that many carbon capture projects are carbon positive. Often by a significant margin. Most of them are pushed by the oil companies since it's something they can point to as helping the environment but it increases power usage and their profits. So it's the option they want everyone to go with. And they'd prefer if we ignore the option that uses self replicating structures with built in solar panels that have spent the last billion years becoming hyper efficient at this exact task.
In this case, the carbon is being captured is a concentrated stream resulting from ethanol fermentation (point source capture). It's more efficient than capturing carbon from the air (direct air capture) due to the much higher initial concentration.