Protip: when you're glazing a TTRPG product, you should share its name, and ideally, a link to where others can buy it. That'll translate into the people making the stuff you want getting more sales and will therefore be more incentivised to make more of it.
People can do it; they just don't want to buy a fifty dollar, three hundred page gadget book and spend up to three hours every session managing equipment loadouts.
From the rules
From what the players done
From your previous rulings
Extrapolation from pre existing things
A setting Bible
Making sure NPC (factions) act in a logical matter
ETC
I have vastly different TTRPG objectives from you so I'm quite surprised we share the opinion that the fiction exists outside the DM and can thereby dictates what the DM does.
You'd be surprised. "Faster" can meaning "stripping out important context and granularity" to some and "more thematic" can mean "impose restrictions on the DM that force the game into unwanted directions."
Sounds like a great game. Your players played in the way that suited their desires. If only every group pursued their preferred playstyle so aggressivily.
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AI could be a great boon for niche playstyles. Instead of complaining that WOTC is ignoring them, they can simply ask their AI buddy to support whatever playstyle they want.
"Grok, take this Radiant Citadel adventure and replace the coziness with a pulp/heavy metal/OSR/etc feeling."
Sounds like 5E would be the perfect fit for Conan stories; considering how often people complain 5E characters are over powered compared to the monsters!