It’s like a physical key, also inside a combination lockbox, hanging from your keychain. It follows the Unix Philosophy in this regard of doing one thing very well and I think that’s a large part of the appeal.
Granted it does many things well, I think the most common case with Yubikeys is we only use them for one or two of their possible functions, and they’re cheap enough that this is okay; like a screw driver with half a dozen bits in the handle, but I just use the Philihp’s Head bit. In earlier Yubikeys, they could get stuck in PIV mode (like getting a bit stuck in your screwdriver), but I doubt anyone ever noticed.
Granted it does many things well, I think the most common case with Yubikeys is we only use them for one or two of their possible functions, and they’re cheap enough that this is okay; like a screw driver with half a dozen bits in the handle, but I just use the Philihp’s Head bit. In earlier Yubikeys, they could get stuck in PIV mode (like getting a bit stuck in your screwdriver), but I doubt anyone ever noticed.