For example, these changes mean you'll no longer be able to control the volume of a group of speakers. Instead, you'll have to change the volume on each individually. It also means you'll no longer be able to use the volume buttons on your phone to control a speaker group. Not here to defend Google, but how can something trivial like that even be patentable?
Kinda crappy but i'm sure google has tons of patents on things we would find trivial as well, as far as i'm concerned, let shitty mega corps duke it out.
Even after that, I believe Google only used their patents defensively: they'd only sue company X for patent violations if company X sued Google for patent violations. When I worked there, that was the impression the company gave off, and some initiatives like "Alliance for Open Media" the other commenter mentioned are in line with that.
I don't think Google is unique in this: older tech companies seem to have more aggressive patent strategies, whereas newer (.com era and onward) seem to dislike software patents but are forced to play the game by more aggressive companies and patent trolls. It's a drag on the industry IMO.
The biggest losers are newer and smaller companies, who haven't had enough time or resources to build up a defensive patent portfolio.