If they use a program they have to deal with Kim's legal team objecting and forcing the prosecution to convince a judge that they have a way to sift information

If they use a program they have to deal with Kim's legal team objecting and forcing the prosecution to convince a judge that they have a way to sift information with a 100% guarantee of not mistakenly taking anything it is not legal for them to take. Easier to just hire a bunch of interns to do the work.