As a new player trying to learn one will take A LOT of time, it will stop you from unlocking more mechanical things and so on, it's a significant investment of resoures in a time where they can feel most precious. And as a result, it feels like very few people within first few months learn another language unless it's via say skillsoft.
On the other end down the line learning all 8 is more like "yeah, why not" and becomes more of a footnote that, by that time, almost everyone speaks to them all, if they don't, it's an RP choice.
It does not feel right? I think it would be way better if learning one extra language would be -much- les of an investment, but also maybe less of a footnote towards the end, making it still a meaningful investment you can make early on, without devaluing the languages as a whole. And maybe it would lead to more people using anything besides english hah.