I really don't see why you're getting your knickers in a twist about this -- and I don't think it was a sterrible as you're making out.
You're not the intended audience, and neither am I, and neither is anyone else on CWDF -- and the same applies to pretty much every programme on the TV about canals, with the possible exception of Robbie's "Cruising the Cut" -- which people on here still nitpicked about... 😞
"It's almost as if the programme makers were trying to come up with easy-watching TV for watchers after undemanding entertainment requiring no familiarity with the subject. " is a good summary, and I think it was just that. If that's not what you're looking for, don't watch it 🙂