You can but there are concerns about hydrogen being a smaller molecule so we’d get increased leakage (with knock on effects)
No one really knows how our existing natural gas infrastructure will cope with hydrogen
No one really knows how our existing natural gas infrastructure will cope with hydrogen
https://hydeploy.co.uk/app/uploads/2018/02/HYDEPLOY-FOURTH-O...
https://hydeploy.co.uk/app/uploads/2018/02/21935_CADENT_HYDE...
This isn't black-and-white. Leakage is a disadvantage, as it is for fossil fuels (natural gas, oil, coal,...). Other technologies have other problems: windmills kill birds and bats! Pumped storage kills fish! Dams cause methane leaks! It is important to quantify how much of a problem those disadvantages really are.