@Jenkins5 covered the structural, but to expand more on the baseball side, everything you said about the Brewers DSL system has been true (I think I once said that an "Abandon All Hope Ye Who Enter Here" sign should be placed above its bullpen) -- until recently.
The classes on either side of the pandemic have been the deepest in team history, and it has led to Carolina, which I think once had a starting lineup of all DSL grads, to have an above .500 record despite having the youngest offense and pitching staff in their league.
And it looks like it is going to continue next year. I'd wager a majority of the opening day starting lineup in Carolina next season is DSL grads (or guys who skipped the DSL after being injured the year after signing).
Patricio Aquino, Arielbi Gonzalez, Alexander Vallecillo, Gerson Calzadilla and Yujanyer Herrera all have been pitching like legitimate options to be in a piggyback role in Carolina next year.
Now granted, this year's DSL group doesn't seem to be quite as deep as the previous two classes, And with Lara not being able to keep up his early pace, there isn't an obvious jump-off-the-page prospect, but then to be honest, Chourio had a pretty pedestrian first half last season and Areinamo and Castillo, two of the Brewers' best Arizona hitters this season were pretty nondescript.
A sizable chunk of the team won't make it stateside and another sizable chunk won't make it out of the ACL, but that's the same as any guys. The college draftees just start a few levels up. The Brewers had what looks to be a really good draft last year and despite that, a chunk of the guys drafted in the first 10 rounds appear headed for those same bench/middle relief roles you talked about next year, just in Wisconsin instead.