Egypt's newly discovered tombs hold mummies, animal statues
phys.org
phys.org
One interesting thing about the cat mummies here is that they'll provide additional datapoints on how well fed temple-sacrificial cats were and how they were killed. And perhaps at some point some ancient DNA can be sequenced? Which will give interesting data about how domesticated they were. Bradshaw in _Cat Sense_ argues that the core work of domesticating cats was accomplished by the Ancient Egyptians as a byproduct of their large-scale breeding, necessary for the raising the vast volumes of cats to be sacrificed as offerings.
The most common cats in ancient Egypt are still around today, https://en.wikipedia.org/wiki/African_wildcat and https://en.wikipedia.org/wiki/Jungle_cat
I know this does doesn't quite answer your "changed over time" question, but it is a data point.
And who decides that? The people receiving ad money for producing entertaining content that people want to watch? The armchair archaeologists watching the videos? The platform on which the video is hosted, who is heavily incentivized to host entertaining content that people want to watch?
There are hundreds of square miles of sites, letting armchair archeologists vote on what should be looked at isn’t going to break anything.
To get more tourist dollars. Think of it as a loss leader. You allocate 0.1% of your archeology budget to humor the amateur Egyptologist YouTubers with the most subscribers, and then engages a whole new generation who then want to visit for themselves.
If the guy who runs the Ancient Architects YouTube channel thinks there might be a secret entrance to the pyramid behind a specific stone, fly him out and let him go up there and check it out. It's not like the whole thing is going to fall over if he runs some tests on it or tries to see if one of the stones is movable, people have been climbing it for thousands of years.
Boaty McBoatface would disagree.