There are exceptions - here in the UK we have the RI: https://www.rigb.org/
The Christmas lectures are probably the most famous thing they do, and these have definitely moved in a more 'child' focussed direction. If you were attending the Christmas lectures in the 1850s however, the audience would have been middle class victorioans, and you'd have had Michael Faraday telling you about electricity, forces, chemistry etc.
https://en.wikipedia.org/wiki/Royal_Institution_Christmas_Le...
I would recommend attending one of their lectures if you happen to find yourself in London, just to be in the building, and to sit in the lecture theatre!
Listening to the Christmas lectures was a high point of my childhood, and everyone in my family still remembers and talks about the ones we watched.