> to try to maybe help some rather technologically-hopeless groups of people
Even if they're the majority?
(Keep in mind that as average lifespan keeps getting longer while birth rates keep going lower, demographics will tend to skew older and older. Already happened in Japan; other developed countries will catch up soon.)
> They should probably not have a bank account at all and just stick to cash.
You know that these (mostly) don't fall into this category of being "hopeless with [modern] technology" because they're cognitively impaired, right?
Mostly, the people who most benefit by these protections, are just people 1. with full lives, who 2. are old enough that when they were first introduced to these kinds of technologies, it came at a time in their life when they already had too much to do and too many other things to think/care about, to have any time left over for adapting their thinking to a "new way of doing things."
This group of people still fully understands, and can make fluent use of, all the older technologies "from back in their day" that they did absorb and adapt to earlier in their lives, back when they had the time/motivation to do so. They can use a bank account; they can make phone calls and understand voicemail; they can print and fax and probably even email things. They can, just barely, use messaging apps. But truly modern inventions like "social media' confound them.
Old bigcorps with low churn rates are literally chock-full of this type of person, because they've worked there since they were young. That's why these companies themselves can sometimes come off as "out of touch", both in their communications and in their decision-making. But those companies don't often collapse from mismanagement. Things still get done just fine. Just using slower, older processes.