-_-No. They don't need to take the same amount of time. Corruption games often include both. Shorter repeat scenes would take less time, especially since they're in position for the selfies anyway, but the dev doesn't want to make shorter scenes. It was more of an artistic choice.
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An animation, repeating what we have already shown, will take the same amount of dev time as an animation with a purpose and story progression.
The same with CGs.
...What are we talking about?
"Just make it shorter" - well he did make it short. You think it's not enough. You need longer - more CGs, some animations I presume?
That WILL take dev time.
You can argue whether it's worth it or not - absolutely. That's just taste. But these repeats will replace more meaningful scenes: CGs and animations.
You can't just pretend that it'll be without a cost. For us. For the end user.