I agree there are likely to be problems with the digital SAT, some known, some unanticipated.
I am no fan of CB, but it does seem they have thought through a lot of things, for example students will be able to hide answers (so they can eliminate and choose between two), and use a pencil and paper to work out problems. The reading passages will be short….so no long passages as before, so they will be able to see the whole passage on the screen at the same time.
Students will be using their own device for the test. And CB can provide devices if necessary.
I expect that the problems that do arise will be more frequent and detrimental to limited income students.
I encourage parents to have their kids take a practice digital SAT at a local test provider, and urge their HSs to offer digital PSATs as soon as they are able.