Forking this over from the
https://www.enworld.org/threads/manual-of-the-planes-for-5e-on-dmsguild.700597/ thread where this sidebar is taking away from the excellent work those folks are doing.
Something that was said in that thread caught my eye:
See, this is how I feel about it. I was doing a bit of a nostalgia dive into my 3e books collection and I realized pretty quickly how much I do not want those kinds of books anymore. I've got, for example, pretty much the entire run of Scarred Lands. LOVED the setting. ADORED it. Reading it now? Zero interest in running it because I realize that despite having all this lore and background and whatnot, any campaign I build in Scarred Lands is going to be me pretty much home brewing 100% of the campaign. Sure, it will draw on various Scarred Lands ideas, but, since there are almost no actual, practical, usable elements in the books (other than monsters I suppose), I'm stuck writing 99% of everything myself.
I have neither the time, inclination or frankly, skill to do that. I really don't. I freely admit that. I don't want books of setting material. Setting material books are completely useless to me. Don't tell me that there is a thieves guild operating in this city. Instead, give me two or three short adventures plus a half dozen sidebar adventures using that thieves guild. Sure, that means I get less background material for the city. I get that. There is a limit on page count after all. But, that adventure location with NPC's, maps, and actual adventures is something I can use RIGHT NOW. It doesn't mean that I have to take the pages of setting material and then incorporate it into whatever adventure I happen to bake. And, even better, I can use that material as a skeleton framework to build and scaffold a larger adventure onto.