Not sure what they did to upset you, but they are absolutely archivists. Off the top of my head, they've preserved flash games and animations and written an interpreter to get them working in modern browsers; they've scanned books and made them borrowable from the browser, which I've personally used for archival research.

I'm guessing what you're referring to is their lawsuit with the publishing industry, where they attempted to lend digital copies of books without backing them with hard copies on a shelf. That was probably ill advised, and I suppose you could view it as political activism, but it's pretty obviously in furtherance of their mission as archivists - preserving content means little if it can't be accessed. (This was also in the context of the early pandemic, where access to physical libraries was extremely limited.)