At least where I live, basically everything that's on discovery, national geographic and the history channel now is just "experts" talking (reading a script) about "hitler's secret sex life" or some such thing, interspersed with a re-enactment shot or one of the "experts" walking around a slightly relevant building.
Lack of depth? Wrong. Just go beyond the usual pop-sci stuff on YT.
You can go as deep as you want. Surely it won't be "as fun" or "tiktok sized" but if you want depth it's there