It never made much sense to me that two interstellar peoples could be so close as they must be for all the DS9-era contact, yet mostly ignorant of each other for the previous several hundred years. Especially when both groups are very much for expanding their contact with other peoples, for different reasons. So yeah, I'm pretty willing to ignore most of the early TNG Ferengi stuff and not knock Enterprise too much for having a Ferengi episode.
I've seen it explained that the Alpha Quadrant was home to the Vulcans, Klingons, Romulans, Cardassians, Ferengi, and a few other major powers. Exploration towards the Beta Quadrant was a major frontier. Then the Vulcans discovered Earth and Humans at the far end of the Alpha Quadrant, almost into the Beta Quadrant, and introduced them to the larger world.
The territory in the Alpha Quadrant was mostly claimed and spoken for, so Humans explored
the fuck out of the Beta Quadrant in the years before TNG (far ahead of rivals like the Klingons), and claimed massive territory, more than any other Alpha Quadrant power, and eventually became the dominant Alpha Quadrant power using Beta Quadrant resources.
When the Humans turned their eyes back towards the Alpha Quadrant, and used Federation membership treaties to push Human power closer to weakly defended Alpha Quadrant borders, wars got started.
I actually liked how the Ethan Phillips Ferengi used a whip, sort of a little throwback. I don't mind them ignoring the original Ferengi concept from the TNG debut (since it was awful). What is odd/annoying to me is how Archer wins them over with the promise of a vault full of gold when it's well established gold is worthless - hence its use to plate the latinum.
Quark also had some old action figures of a Ferengi hero who used a whip.
And I think at the time, the Ferengi hadn't settled on an interstellar currency, they just knew that gold had value to Archer, so it was a valid method of payment. Maybe it could only be used to pay Humans, but it was money.