I should note that a lot of this coincided with the DC film world’s long gap on the Batman front, where everyone was trying to figure out whether Ben Affleck’s Batman was in or out.
With that being said, the Batman appearance in Gotham and Bruce Wayne appearances in other live-action projects have been a fairly recent trend.
It could’ve been that absence was why DC allowed this unprecedented amount of access, though it maybe also be a sign that things are changing.
Furthermore, The CW is airing Batwoman, which not only frequently mentions Batman and his famous adversaries (not to mention, but has also finally shown what Bruce looks like.