They show the factory in their video on the page, it's a new modern car chassis with the vintage look (so it's not a Ford Bronco chassis but the external look is inspired by it).
The post is an ad. And I don't see why any "Restomod" can't have airbags, crumble zones, etc.
Economics of engineering and delivering an effective advanced passenger protection seems pretty obvious to me.
You can't just stick an airbag in front of a passenger and go "cool, they're safe now!"