Safari setting "Always allow on this/every website"

Thanks. So trying to summarise, have I got it right that:

1. "Allow all websites always" is what 1P7 and previous versions did, and is maximum convenience.
2. Adding the option to "allow this website always" is a new 1P8 option giving more control by being restrictive.
3. Adding the option to "allow this website once" is even more restrictive. This is the 1P8 default.

So overriding the severe warnings in 1P8 about option 1 results in equivalence to 1P7.