> it sucks

Exactly. From the page about the requirements for the app under 1) in your link:

> System requirements

> Android 12 or iOS 16

So one of four methods is, by default, already completely dependent on having an account with $american_megacorp.

4) is another app where it doesn’t outright say, but I’m guessing the requirements are also a mainstream OS, mobile at that as well since they seem to use biometrics.

That leaves 2) dedicated hardware and 3) dedicated hardware. Great. (see the “my house burned down” article/thought experiment as to why I’m against that.)