I think his problem with the question was that being able to select only one option was a weird choice, in addition to the question itself being an odd choice as someone in the industry.
The scale of the project might have different pros and cons for how Dynamo can be useful but to say one size scale benefits more than another is a hard topic to battle and in my opinion not worth the fight.
Meaning, smaller scale projects can utilize more direct changes/graphs and easier to troubleshoot/shorter development time. A larger scale project comes with more problems even for a repetitive task (try geometry intersection on a 4 tower apartment complex). And say you develop a graph to do the repetitive task for a large scale, it still works for small scale.
But, as you said, larger scale projects lets you use the same graph to do x amount more of repetitive actions.
Both give Dynamo a way to be useful, and I would say neither one receive more benefits.
Edit: Back to the original survey question, “which… are a best fit for visual programming workflows?” the answer is all of them.