> Pretty sure they could, at least early on
Maybe early on in Google. But to influence thousands of highly opinionated people, all with their own opinions, without negative side effects, is really difficult. Did you mean early on in the employees' efforts, or early in Google?
> No-one apart from you is calling this tampering.
Sorry for the confusion -- I mean "tamping" -- that any topdown attempt to force neutrality on employees when they are agitating for not-neutrality would have negative costs. (tampering is a different word, but it's an understandable mis-communication... darn English!)
> Or maybe all of this bias is accidental...
You could be 100% correct. I have no idea, it's a viable option. My point was to answer your original question of "what could they be thinking".
My objective was just to propose a few ideas about what they could be thinking. I 100% don't know, but I think what I said could fit the limited information we have.