Why is helmet necessary?

[wallawe]

Since you can already customize what's in the head by importing 'next/head' and customizing, is helmet necessary? Thanks for any advice, I'm trying to figure out whether I should gut helmet or if there's an edge case I'm not thinking of.

[ianwang]

since there're still some bugs when using next/head like this and this, so I'd prefer using react-helmet at the moment.
and also next/head requires adding key prop to prevent duplicate tag which is a little bit annoying. (you might easily forget and introduce a SEO bug without knowing)