No, I can do both but absorb much better when I internal monologue it but can read much faster when I don't. Some people don't internal monologue it at all.

If you're in the market for another "wait I thought everyone did it X way?!" surprise look up aphantasia where some percentage of people can't mentally "picture" items and there's a whole spectrum of vividness. I've yet to find someone not surprised by this no matter where they are on the spectrum.

Personally it's the same way you look at a thing and get a mental sense of "this is that thing" without having to scan every detail right away, you look at a chunk of a sentence or words and get the sense of its meaning, and you can vocalize that in your head if you want to

I have two modes of reading - when I read a story to enjoy, I read it to myself with inner voice saying the words (like internal audiobook). When I read to gather information quickly, I try to just absorb as much keywords as possible by quickly glancing at text and trying to directly absorb the text, rereading where needed.

I have two reading modes: A narrative reading mode where a voice reads the text, and a speed reading mode where my eyes scan down the page and recognize the characters, words and phrases without any voice.

Not at all. I can do it, but I have to actively produce it. Don't see much use for it except when reading quality fiction. It's dog slow IME. You are a fast reader?

You might wonder how I read and it's a bit like how you can watch an intersection and know what to do without verbalizing "there is a bike", "there is a car". You just get the situation and understand it. Sentences are like that as well.

It is not.