Could it be due to some overly zealous prude filter and the unfortunate coincidence that "beej" is American slang for blowjob (oral sex)?
But they index everything else on my site and don't prude out over that...
If I search "Beej" on Google without Safesearch enabled, I get 14.3M results, if I turn on the Safesearch filter, it still returns 14.3M results.
If I repeat the same experiment with "blowjob", it's 1.5B results vs 23M.
If I search for "Beej" on Bing with SafeSearch Off, I get 2,840,000 results, while with Safesearch on Strict, I get 2,800,000 results. I couldn't search for "blowjob" at all with Safesearch on Strict.
But MASH is getting a little too far removed these days. :)
EDIT: but maybe they did, ever since voice assistants became a thing?