I think you’re misunderstanding a fundamental here. They didn’t make the content harder due to the ‘meta’ builds. The content was hard to begin with, people found out the ‘meta’ builds, then proceeded to destroy the content. That’s how it’s always worked.
They didn’t expect anyone to even be able to complete AoZ, but they also didn’t change anything major for any of the overperforming builds for that season either. So as such ‘metas’ came out of the woodworks, and proceeded to destroy AoZ, along with some glitches and snapshotting theatrics.
The Pit wasn’t tuned around anything, there’s still no one to this day that has beaten Tier 200. If it was tuned to a particular build, as you so claim, people would’ve been done with The Pit in Season 4.
Infernal Hordes is tuned around AoE damage as well as single target for the bosses. Now it’s hilarious you think it’s tuned around a build that happens to be proficient in both, however you only mentioned the Sorc, when the Druid, Rogue, and Necro have a fairly easy time with it too. Barb I would say is the only one who suffers.
I think a better way to put it is that the content is over tuned for “play it your way”. This results in most everyone playing a S tier builds to complete the content. Or getting carried.
Any brewing are based around in game mechanics. Inefficient home brew simply means not understanding game mechanics or prefered playstyle is undervalued by Blizzard.
Nothing wrong with meta. D4 is surrounding seasons and each season change of taste in strong builds is more positive than D2 style where new season is exactly replica of builds used every season.
D4 doesnt and never will be play your way. Its only partially true for casual contents, not end game efficiency level.