The animation style and visual expression are very important to create a positive impression and credibility. Every visual expression must be unique and speak to your audience. It is through visual expression that you stand out.
The animation style also has a lot to say for visual expression. But it primarily provides guidelines for how we communicate. There is a big difference between whether we make 2D animation or 3D animation. We create characters that speak, infographics with text, or perhaps a visual representation of something complex. The budget puts great guidance on animation style. It is usually much cheaper to make something in 2D than in 3D.