Once you internationalize you will need this because in German it's an absolute no go to address a stranger by their first name (at least for B2B services).
And internationalization is on the road map for a lot of companies.
I was working for a UK steel supplier and they would address all their email recipients with their first name. We had to change this when internationalizing into German. If you want to sell to Germans you are much safer to use a more formal tone.
Slightly related to that is the formal and informal you that exists in a lot of languages.
I was also working for a German fashion startup mostly targeted at young women. In German it was fine to address everyone by first name and the informal you, but when translated the page to French, we could keep the first name but had to change the informal you to the formal one.