I took rl3's comment as basically saying that since it is so easy to send data across the border using the internet, only someone so extremely stupid that such people are unlikely to even exist would actually try to cross the border with a laptop or phone that contains evidence of a crime. The implication is then that it is fruitless to look at phones and laptops at the border to try to find criminals.

My response was trying to say that he's way off in his understanding of what people of average intelligence do when they do criminal things. There are plenty of arguments one can use to make a plausible case against widespread border searches. The argument that basically no one is dumb enough to carry a phone or laptop with incriminating data across the border is not one of them.