A perceived LLM preference for 'they' over 'it'

Looking back at posts from one to two years earlier, a user noticed they had used 'it' and 'they' interchangeably for LLMs. They say they stopped using 'it' after noticing about a year ago that LLMs almost always strongly preferred 'they,' in their experience. 'They' now feels more natural to them, though they aren't sure why they didn't notice the preference sooner.