It depends on the carbon capture system being used. Some can be placed wherever others have to be placed at a Powerplant to capture emissions at the source. Again the issue is the energy required to capture this carbon will always result in more emissions than they capture until we have a renewable/low carbon energy grid to begin with and thus what we should really be doing is reducing the carbon output of our energy grid.

I mean yeah I'd rather we spent time replacing fossil fuel with some combination of nuclear and renewables as I think that'd be a better use of our time and money

The issue with carbon capture is that it takes energy to remove carbon from the atmosphere. Unless every energy transfer from release of carbon to capture of carbon is perfectly 100% efficient it will always result in more than 1 tonne of carbon emitted to capture 1 tonne of carbon using fossil fuel power stations.

The solution to that is obviously to use renewable energy and until the power grid is almost entirely renewable energy carbon capture won't be the best use of our time and effort.