Most LLMs these days can use tools (such as web searching), so depending on how strictly you define "autocomplete" this alone could disqualify it from being an autocomplete, fancy or otherwise.
Goes without saying - humans are no truth engines either lol.
People latched onto the bs marketing terms like "thinking" way too easily. I don't know where all the classic hacker skepticism and desire to know how things actually work went the past four years.