If you are capable of 5.12 or better, you are prepared for the Bachar Yerian. If you can't climb those grades, you'll need more bolts. You can climb out of control, with more abandon and confidence, you can risk trying a move that you might not really be ready for. In short, you can be a physically weaker climber and climb a heavily bolted route for a given grade.
Why use any pro at all then pope?? Why? Why do you get to decide how much is just enough??? THisiz a stupid stance...
Now wait a minute, you're the guy always accusing me of being Captain Hyperbole!
Touche`!