Will this person's bank implement WEI in such a way that none of this person's devices (computer, phone) are supported and will this person not be willing or able to switch banks, only then buying a new computer comes into view. Without knowing anything about this person, assuming average, the chances for this must be low or the bank will have no happy customers left.
I fully agree with the underlying worries you and others in this thread have, but to extrapolate that without any nuance into a world where we all become privacy-less, ad consuming, eye tracked zombies on newly bought computers is not helping the case (in my view).