The Braves do seem to have a pretty solid pipeline of finding high school talent based in their backyard - particularly Georgia and MS. Credit them for having a great handle of local scouting identifying talent in what is a very deep pool regionally. The Brewers, based on geography, don't exactly have an endless pool of baseball talent to mine every time the draft rolls around.
Acuna and Albies came from a large crop of international signings, which the Braves have always been big players in and have an extensive scouting network as well...frankly that's an area where they went beyond bending the rules in terms of signing bonuses around the same time those great players were brought into the fold. As is the case with international signings, they've had more than their share of big misses, too. A majority of the rest of their current roster that is scoring a ton of runs was acquired via trade or free agency and did not come up through their system.
Aside from Corbin Carroll, a 1st round draft pick who really didn't need any extensive minor league seasoning and tracked through the minors similarly to Trout once he began his professional career, who else have the Dbacks developed of note offensively in recent years? I mean, they drafted Dansby Swanson 1st overall like 8-9 drafts ago - but does it really count being awful enough at the MLB level to be able to pick at the top of the draft - particularly when they traded him to the Braves for Shelby Miller?
It wouldn't surprise me to see the Brewers identified among the top 10 organizations in terms of farm systems over the winter, with the strength of it coming from what are perceived as recent international signing home runs knocking on the MLB door at very young ages (Chourio, Quero) and some recent draftees who absolutely are raking in higher minor league levels (Black). That comes as their 2021 1st rounder is now in the majors, their 2020 1st rounder is a major league regular if he could avoid injury and his ABs have largely been replaced by their 2020 4th rounder, and their 2018 1st rounder is this team's starting 2B. And the Brewers haven't picked in the top half of the 1st round since 2017. Am I saying Frelick/Wiemer/Mitchell/Turang are going to be perennial all stars? Nope - but it's also way too soon to exclude them from being decent to good MLB hitters.
This sort of stuff winds up being far more cyclical than fans, and frankly baseball front offices because the randomness of it all takes away from the perception of how smart they are, care to admit. To have a period where your organization churns out a bunch of solid young players (hitters or pitchers), you either have to have endless financial/scouting resources (Dodgers/Yankees), suck at the MLB level for a looong time and get pick of the litter draft choices every year (Orioles/Reds now, Padres a few years ago and Astros/Cubs/Royals before that), or hit the occasional home run in the draft along with making a few shrewd trades that bring in young talent (Braves, Cardinals most of the time).