Yes he is doing the right thing. this kind of brace is necessary for cars like charades, mehran, Khyber and cultus because with the passage of time the " mukkian" of the car stretches making the alignment of car out all the time. (and the new word we heard in the video is "KUKKAR"
he has done correctly as per the tools and resources available but the rod making can be more refined so that it sits perfectly and its welds doesn't break.
this stretching is common in charades which are used with wider tires than the specified ones.
And bhai jb gari di the for denting to at least service kerwa k detey so the dirt and grime doesn't comes in between when he was applying the black coat