My reading of it is this
From Feb 2021 you won't be able to buy bagged coal or wet wood for domestic use, from Feb 2022 or 3 you won't be able to buy bulk wet wood under 2 cu m, and if its over 2 cu m the supplier must provide advice on how to dry it. Smokeless, the sort already certified for smoke control zones, will still be OK.
Where I live it seems to be legislation to solve a non existent problem but in cities it will help. I lived in Manchester in the early 70s as smoke control orders came in and the city visibly changed in 2 or 3 years, so these things do have a real impact. Its pollution control, nothing to do with climate change.
I use very little coal, 1 bag a year and can easily switch to smokeless, only use it when the stove is being a pig to light oton rare occasions to help it stay lit overnight, but not had the need for that since our last - 10 spell years ago.
If I continue with bulk wood my supplier will have to advise me how to stack it, but since I ve been doing it for 40 years and keep at least 12 months ahead of the game I could probably teach him. No one would knowingly buy wet wood, many knowingly sell it. Some very questionable stuff in some garages and garden centres.
I've just thought of a commercial opportunity, a course to teach people how to season a 2 cu m load of mixed logs in a small inner city apartment....
I'm very rural with space, I wouldn't even think of a log fire in a city apartment but aparrently it's been a big growth business hence the pollutant concerns. Gove started it when he was env secretary, maybe he had a smelly smoky neighbour.
As far as I know its domestic heating only so you can still fire your steam locomotive on whatever you wish.