When I saw they had to go this low, I was pretty sure they have nothing.
To demonstrate how snake-oil people leap to conclusions and paint with a broad brush based on flimsy evidence…
…you leap to conclusions and paint with a broad brush based on anecdata.
> When I saw they had to go this low, I was pretty sure they have nothing.
Sounds great!
Here's my (hopefully charitable) reading of your argument:
1. Alternative theories of history are disingenious (sic) snake oil, because they're based on weak circumstantial evidence. They use flawed reasoning to support strawman interpretations of the data.
2. To support this theory, you mention a video you saw (well, maybe saw…) of one guy X (Däniken) claiming something about Y (vessel batteries?).
Don't you find the irony delicious?
All theories were "alternative" at some point. Some stood the test of time and evidence; some didn't (Gobekli Tepe embarrassed quite a few "mainstream" scientists in its time); some are in the academic weighing right now (the Younger Dryas Impact Hypothesis).
The problem is that wrong/inadequate/inferior theories will tend to be neglected, professionals will be stay clear of them, and "if only we had better theorists" could be a rallying call in those cases as well.
"If only there wasn't such a bias against phlogistonism we'd have higher-quality phlogiston research."
Weirdly enough I don't think I've heard this argument much in the crackpot science world, where I have more experience, but it is not uncommon for people to imprint on obsolete theories that modern working scientists can't really discuss because they don't know them in detail or maybe even in broad strokes (epicycles or the like).
I'm happy to leave it to the professionals. History is a quite high-evidence high-rigour domain, with many converging sources that confirm earlier theories (genetics/linguistics/carbon dating/etc.).