Yev from Backblaze here -> we have more than two data center locations, but we do have two regions (US-West, which is spread out across California and Arizona and EU-Central which is in Amsterdam). Slight nuance, but very different!
You're right, but for me as a customer it doesn't matter. I can choose from two geographical locations and cannot use both at once with one account. So there's no option to get data close to my users.