Is it possible to improve "AI SEO" on ChatGPT using Reddit?

I have seen ChatGPT often cites Reddit when forming responses.

Last month, there was a flood of posts on LinkedIn recommending brands to establish a presence on Reddit for better AI SEO.

That got me wondering:

• Do all AI models lean on Reddit, or is this more specific to ChatGPT?

• And does having a brand presence on Reddit actually influence how ChatGPT gives out information?

Anyone who has tried it or knows about this new SEO technique?