The thing is, he has a right to review evidence that's going to be used against him. If that cannot feasibly be done with boxes of paper, because of jail policies, then a laptop may be necessary.

Either that or the prosecution needs to clarify that some of the papers they provided as a Brady requirement are not going to be used in court. Because that's what this really is. The prosecution wants to spam the defense with a ton of documents to keep secret which ones they actually plan on using, which ones they actually think might be exculpatory. And in general judges give prosecutors a lot of latitude to do this because you can't be sure what you're going to use until the case actually gets to trial. But there does become a point when it's absurd and I think 15,000 pages is around that point.