They're suggesting using the pageTitle parameter for the title, and being explicit about how things are used. If you pass a companyName parameter, it is quite generic. You just happen to use the companyName for the title, but you also use it elsewhere. Someone might want to add some additional info to the title. Their solution will likely be a new parameter and then concatenate these values together. But if you just thought about being explicit to begin with, then you'd already have the functionality to do that.
The idea is to write things as standalone components. Which is a pretty universal programming strategy.
The idea is to write things as standalone components. Which is a pretty universal programming strategy.