Did Hercule Poirot's mustache in Murder on the Orient Express (2017) enhance or distract from his character?

Hercule Poirot's Mustache poll options

Hercule Poirot's Mustache

Murder on the Orient Express (2017)

Hercule Poirot

• It added depth to his character
• It was a distracting element
• It was a humorous touch
• It was irrelevant to his character