1. That's why I gave two sources, dummy.The second source is a detailed dataset and says in the FAQ: "Around 68% of UK households have access to off-street parking."
2. Who mentioned AI? i didn't. I said "rando YT". The notion that your paltry 24 hours in the UK plus watching some YT videos gives you insight into what off-street parking is like in the UK is completely absurd. You cannot seriously think this gives you any kind of meaningful insight. You might aw well pick out Templewood Avenue on Streetview and declare that every house in the UK has off-street parking, or Mabfield Road in Fallowfield and declare none does. I've lived here all my life, and I wouldn't presume ot guess what percentage of cars are parked off-street on the basis of what I've seen with my eyes, because there's 30m+ cars in the UK and 800,000 streets!
3. Once again, you fail at basic reading comprehension. "Will be able to" does not mean the same as "Will". It means "have the possibility". I say this because modern houses have electricity and houses with off-street parking have... off-street parking, and those are the only two pieces of infrastructure required for a household to able to provide home charging. You keep trying to make out this is really hard and really complicated, and it's not. 70% of cars are parked at houses with off-street parking. The owners of those houses could, if they choose, put in a home charger, and then those cars could be charged at home. It will cost the owners about £1000 and ... that's all there is to it. I'm not claiming that all households will do this, I'm saying it's not physically impossible for them to do it, whereas it is physically impossible to put in off-street charging at a house that doesn't have off-street parking (or doesn't have electricity, but that's basically zero houses).