I find Mary-Beard satisfying to watch. I'm having trouble finding it but she was on a panel and asked about the fall of Rome and her response was something to the effect of "Asking why Rome fell is the wrong question. A better question is why was it so successful in the first place."
Her reasons were, if I remember correctly, though Romans were brutal, for a long time and for the most part, they provided a better quality of life to many of the subjugated people and provided a path to citizenship. Further, they were adaptable about the places they governed, at least relative to other options at the time, keeping established powers in play, so long as they pledged allegiance to the Roman empire.
From what I gather, Mary-Beard's reasons for why Rome eventually fell was because they became too insular, eventually denying citizenship to larger cohorts of people and succumbing to corruption. I remember her saying that Rome was on the knife's edge of collapse many times and that it was more about their successes that pulled them through than about avoiding failure.
Just as an aside, I've heard that the concept of cyclops might have been from finding old mammoth skulls. The hole in the middle is for the nose cavity could be mistaken for an eye socket. Many pictures show cyclops as having tusks.
On the one hand, okay - it was fancier. However, I do not believe that any public air ceremony with fighting, dying, and live animals in it will be sedate. I’ve been to open air events in many continents, and people just aren’t naturally all quiet like when life and death things are happening. I just cannot imagine this behavior outside of a religious ceremony.
Even at the opera or live theater, both of which darken lights, light a stage, architect for acoustic carry, there is often shushing, resettling, multiple cues for the audience to sort of ‘settle down’ and pay attention. The idea that 50k people are going to watch some captured Christians face down a lion and make no noise while they were their Tuxedo equivalents seems to me to be in its own way a weird and just off Anglicism. I guess I might be straw manning her pitch a little, but I think she just over pitches this idea — I truly think a society that did that would be very, very unusual, to the point of being extremely creepy.
(Not saying they're malicious, usually. Just that looks-cool pretend will almost always rake in more revenue than reality. Without the hassles or expense of researching what the truth actually is, or changing their script/casting/costumes/whatever to bear a passable resemblance to it.)
I got something too, something that nobody wants to depict:
https://penelope.uchicago.edu/encyclopaedia_romana/britannia...
(Science? Science is a craft for creating stories closely coupled to reality. It's a special case and not as popular as you might think.)
To get popular a story needs to be simple, satisfying, logically consistent with the other stories... I think that covers it.
Reality? LOL. We are bronze-age mud-worshippers.