That factory is likely already at capacity and might have to re-tool machines to accommodate a different product, as well there might not be another factory as maybe the sabotage is a crude oil pipeline and sabotaging it effectively halts the operation until repairs are made. Sure some carbon will be released doing those repairs, but that would likely be far less then any ghg's released during normal operation.

Also, burning down the forest before it can be clear cut could actually be a good idea. The British Columbian wildfires of 2022 were likely caused by excessive forest preservation by putting out any and all wildfires for decades upon decades. This made the forests virtual tinderboxes with all that extra undergrowth. Forest fires are a natural process, so causing one to prevent clear cutting is again arguably better then the clear cut, environmentally speaking.