I dont get this approach of (temporary) storting CO2. How does it help at scale? We start mass producing these fungi to have them store co2 put then in a war

I dont get this approach of (temporary) storting CO2. How does it help at scale? We start mass producing these fungi to have them store co2 put then in a warehouse, repeat? Give the amount of CO2 we need to remove that would quickly fill all available storage space. Trees store C02 as they grow. Then they contain CO2 until they burn or rot. In order to exploit the absorption and storage we need to cut the trees at the optimal time and then store it all to contain it. Quickly filling up all available storage.