AFAIK back then nobody was importing Toyota into the UK, so it would not have been an option.
I rented a Land Cruiser for a road holiday in Iceland. There are few paved roads or bridges in Iceland so it was ideal. Mind you after 2 weeks my back knew it had taken a battering!
I probably wouldn't choose one for anything I do today but would certainly hire one for any holiday that was mainly on unpaved roads.
Edit:
I misread your original post as Land Rover, not Range Rover.
2 things,
1. Range Rover wasn't available 50 years ago either.
2. There is nothing about a Land Cruiser superior to the Range Rover, other than possibly, longevity.
according to extensive testing in desert environments over the last 19 years the only major factor in mechanical breakdowns is in the Landcruiser’s interactions with the AGM-114.