Art is extremely subjective. In front of a painting, everyone will find the artist's proposal interesting or not. However, as the internet has led to sarcasm, there are many jokes and sites laughing a little at the visual styles of the time.
For example, paintings from the 14th century often show the Virgin Mary with a baby that is deformed for our modern standards. Now, this is justified because it is not an infant but a homunculus, a figurative representation of the greatness of the Christ to be born. Then, with time and mores, it will take on features closer to real cherubs.
So, the whole history of art is explained by its time, as youtubers Manon Bril and Charlie Danger make clear. Cave drawings seem "naive" to our eye but they represent bestiaries, cosmological events, constellations, etc.
In fact, we know today by the way that caves were not where prehistoric man lived but rather places of worship. The Egyptians did not draw bodies from the side because they did not know how to do it from the front. This is aspectivity which therefore highlighted the important parts of the body according to the knowledge of perspective at the time.
The world has changed rapidly, that seems undeniable. But is our history really this continuous, accelerating timeline? Yes and no according to two youtubers interested in the humanities. In fact, our past is made of progress and sometimes of setbacks.