Strings on your guitar can be readily replaced, and again, it's not gatekeeping you from your finances or your employment (unless you're a musician, but in this case I'm sure you'll have spare strings and instruments so that if one breaks you can carry on without much thought).
Not all of us live in an area where those options are available. But I can transport your arguments back to the OP post. You can still call your bank from someone else's phone. You can still walk into a bank branch or use an ATM. Using their website is just a convenience. If you lose your phone you can just get a new one and carry on without thought (replace it).
Firstly with covid-19 many banks don't accept walk-ins and have a long waiting list for appointments.
Secondly, what if the bank or other service i'm using has no physical offices at all?
Or what if they're simply too far away and I'm an octogenarian, perhaps with no driving license? Eh? Am I supposed to take an uber to somewhere 100/200 miles away just because morons are given decision-making power and myopic online-apologists on HN even make excuses for them?
Take the mobile app dependency away from banking. Then what? There's a dependency on having a computer. A dependency on having power and internet. Why did the banking system build around these single points of failure?
The reality of system design dictates that you measure risk in terms of what is acceptable vs not-acceptable, the solution on whether it is practical vs not-practical, and the implementation on whether it is economically viable. Raising a stink because your bank wants you to use a mobile phone for verification is like complaining that your car requires gasoline to work. Are there other ways of solve the problem? Sure. Did the solution they landed on meet their requirements, yes. I hardly consider them morons for going with the cell phone approach.
A computer, but not necessarily the one authorised computer. You can use a public one in a library, a friend's, your employer's, etc. Not the same as your own and only authorised smartphone.
> A dependency on having power and internet.
This is honestly not even an argument, and they're not a SPOF. Both the power grid and the Internet have redundancies built-in.
> is like complaining that your car requires gasoline to work.
Again, it's not. The smartphone is used as a single authorised device. Gasoline works regardless of which station you purchase it from. Out of petrol? Fill it up at the nearby station and carry on. Or preferably, don't let it run out in the first place.
> I hardly consider them morons for going with the cell phone approach.
I don't consider them morons either. That's not to say I don't recognise this as a weakness.
A mobile phone works regardless of which store you purchase it from. Lost your phone? Pickup a new one at a nearby store and carry on. Or preferably, don't lose it in the first place.
It's not enough to buy a new phone. You need to contact every single service that's bound to the lost/stolen/broken phone and authorise the new one before you can use their services.
In the case of the car, it's enough to just fill up the tank with petrol purchased anywhere. It's ready to carry on at that point.
> It's not enough to buy a new phone. You need to contact every single service that's bound to the lost/stolen/broken phone and authorize the new one before you can use their services.
Are you referring to changing phone numbers maybe? If so, that is a totally different topic from OP and also from my comments.