Who serves on a jury frequently enough to become accustomed to anything? I've only been mailed for jury duty a few times, and every time when I check the night before I'm waived out.
How does that happen? Television. They see the police pulling up surveillance videos or using high tech lab technologies on television shows and assume that these fictional techniques are the norm. See, for example, https://en.wikipedia.org/wiki/CSI_effect
The other side of the equation is that surveillance infrastructure is already nigh omnipresent, as described by the attached article. A juror who gets alerts every day from their Ring doorbell, who drives a Tesla with an integrated dashcam, and parks in a lot covered by their apartment's security cameras, can be easily persuaded that camera surveillance should be the standard of proof.