Do you believe someone able to maintain Rails code in a sufficient way would have trouble maintaining Sinatra code after reading the documentation? IMHO this is

Do you believe someone able to maintain Rails code in a sufficient way would have trouble maintaining Sinatra code after reading the documentation? IMHO this is the strong point of Sinatra. You do not have much magic going on. Reading the docs and looking at the code should be everything you need to understand what is going on. (In this case the code is well documented and from a technical point of view below CRUD.)