The short answer : ‘It has never gotten in my way in Ruby On Rails.’
A longer answer would need to describe the difference in intent.
In most code generation frameworks I’ve seen so far, the framework takes an ‘I know this stuff much better than you’ attitude, and aggressively interferes with the code you’ve allready written.
The intent here is to shield the code from the dev’s stupidity.
In Rails the code generation is there in order to get you started, it actually explains a lot of the conventions being used, and it encourages you to not use it too much.
The intent here is to help the dev.
I prefer tools that don’t treat me like an idiot.