No. That xkcd (not loading but I assume it is the password one?) is not relevant. Because you can't make a meaningful and easy to remember mnemonic out of a numeric password. That is WHY a purely numeric password is bad for anything that needs security. They are great for 2fa but the unique key should still be the other device.
And all of your good codes are similarly easy to social engineer out, are screwed the moment it is compromised once, or are literally reading off a sticky note.
Which gets back to these kinds of devices largely being security theatre. Because there is no good use case for them that wouldn't also involve encrypting the data/volume after you pin in. At which point... why waste money on something conspicuous with an easy to crack code?