I really don't trust BlueSky. I feel like they call themselves federated as a marketing gimmick to convince people they're better than every other corporate social network, but they've deliberately set it up so that 99.9% of everything is going through their central server anyway. And it frustrates me that a lot of people have bought into that lie. Fediverse has been here delivering on everything BlueSky promised to be and did so long before BlueSky even existed, and yet no one cares because BlueSky had the venture capital to push a bigger marketing campaign.
Unfortunately, people jumping ship from BlueSky still aren't coming over here. So I don't know what to make of this news really, I know it doesn't mean what I wish it would mean.
The second CPU is the GBA CPU, but at twice the clockspeed (which can then downclock for GBA games). You're double-counting it and making it sound like the system had three.
The 3DS is the real funny one, adding its own new CPU alongside both the DS and GBA CPUs. So that's actually three.