SeenItAll..... I'm only Blue on BA! That said, I am a loyal BA user when I do fly so, yes, they probably know me quite well (but these days only every 9 months or so- hence Blue never more than Silver). I suspect the US Authorities also know me pretty well - I had my first visa something like 40 years ago.
Here's another thought. One of my sons works in an environment which means he has had to have UK positive vetting and he travels on a US visa (yes, visa, not ESTA) which allows him through the US lane on arrival rather than having to queue like me. I've sometimes wondered how much probing "they" did on my wife and I and our family when he was vetted. Yes, I know, paranoia rules!