No offence, but what you have written is very much in the scope of needing a tin foil hat.
There is no way for a meter to cut off any high current devices, all it sees is current flowing though it, it can’t tell if that’s from your hot tub or 1000 phone chargers.
Your supplier isn’t allowed to just ‘cut you off’, that isn’t how it works and it’s only a problem if you don’t pay the bill. There is a long process they have to follow first.
Your supply can be disconnected with a non smart meter anyway, the process is the same.
You also can’t have it removed so it’s a mute point anyway and those that don’t have them will be forced in due course.
So yes, I’d suggest Bacofoil, it gives better protection than that thin stuff you get from pound land.