I for sure believe they do. Like the amount of applications that came out with all these features only to have them rolled back because public backlash or because they wanted to put it behind a pay wall has always pissed me off. Look at Bing photo search. When it first showed up you could use it for opsec and tracing the origin of suspect memes. So if I felt something was astro turfed or a user was a bot, I could verify with Bing search. Now I can’t even use it to search a logo because they gutted it. But there’s no way I don’t think that behind closed doors this search isn’t in the hands of political firms or law offices or government.