I thought if a wish bone was ripped out the chassis was scrap? They can be repaired?
In fairness yes this is one of things that is an instant insurance write off but there are methods of doing it. Theres a guy on seloc works for Aston or one of the big manufacturers that use aluminium in the construction of the cars thy use a sleeving method to fix bent extrusions.
Welding is controversial because of the effect on the adhesive. I would think putting additional rivets in should sort that. Thats how Hydro made the Renault Spyder chassis after all.
Its all a bit dodgy though. Having a factory repair done with the car stripped down is different to some guy turning up with a welder. Given an eyes wide open choice you'd just move onto a car that was more straight forward. An odd knock here and there is nothing. I would say most of our cars have had some kind of paint repair etc at some point. I know my Elise has but theres a limit!