The big money strategy is wrong on most of the points, but whatever, it's not so hugely consequential - you go the biggest gist of it right. (Specifically, I think you way overvalue "big draw", which is good).
Honestly I don't think a few hundred games of big money is worth it. Somewhere between two and maybe 50 max. In terms of overall what's best, it's pretty niche though.
The biggest problem, though, is the engine section. And the biggest problem with that is that you give no indication whatsoever of what an engine is. You want to say that your deck is usually going to do more powerful and more consistent things if you can get to the point where you are playing all your (important) cards every turn, and once you can get your deck to coalesce to that point, you can really start unlocking the powerful potential of most of your cards, as well as having something which is really consistent. You want to explain that this means you want to have a large amount of +cards relative to overall cards in your deck. And then villages come in because you need to be able to have the actions available to play your action cards.
In terms of your A beats B beats C stack, I think that that is mostly wrong, but it's at least not very helpful based on the very subjective and relative nature of "good" and "bad". The biggest point I think you could make here is that good execution beats bad execution, which is pretty just the biggest truth.
Copying your opponent in the same game really doesn't work. You end up not getting the same shuffle luck as them, and what you want to do at any given point really really depends on that.
Building an engine is much more than buying random villages at some point. If you don't want them to buy treasure, you really need to say that; it's not at all obvious you don't want treasure, and very often you actually do, even if it's only one or two silvers. Actually, you don't talk about keeping thin at all, which is very much not obvious, especially given that you haven't talked about what engines are trying to do (but really, not obvious anyway).