I've talked to pretty good people that stated with sincerity that they had no inner monologue. They get along just fine without one, even if that's hard for me to imagine.

Rude. Just because people don't think the same way as you doesn't mean they're not sentient. Don't be ableist.

Q&A with a person with no inner monologue

• when reading it's more like they're sorting through a file cabinet of ideas than hearing an audiobook in their heads.
• it helps to read out loud
• they can't play music they've heard before in their heads
• they're not plagued by constantly reliving the past (I think this is actually a very strong positive of not having an inner monologue)
• they can't imagine future conversations before they have them.

I think it's important for socialists to keep in mind how people process information, sine it can massively change our political strategy of spreading our ideas.