> I've never really had a strong internal monologue when thinking, so my assumption would always be that of course, thinking isn't very linguistic (even if we can use it as a tool while thinking).

I always had thought this is the case too. Thinking isn't linguistic but it can be helpful as a tool while thinking, especially while thinking about communication.

It also seems obvious to me that language is a tool for communication rather than thought, although sometimes it also includes communication to yourself (in future).

In some cases, I can visualize words as text too, especially if thinking about written communication.

The quiz does not work.