Oh, I don't disagree. I know there are lots of people who want to read RPG books like they were books. I'm not one of them. I see RPG books as references for the game. If it's not directly applicable to the game, I'm not particularly interested. Don't tell me there is a cult of XX in town Y. Give me an entire list of NPC's, with names and stat blocks, three locations where the cult operates and then two or three short adventures revolving around that cult. Which doesn't leave a whole lot of room for all that other "travel brochure" stuff.
I've never been a lore guy. I'm just not. Books like the FRCS are wasted on me. I won't buy them or read them. So, I'm really happy with the direction WotC is going with its supplements. I get why people aren't happy. But, considering that there's the DM's Guild right there, with authors like Ed Greenwood doing Forgotten Realms supplements or that new supplement for Planescape done by a bunch of people who truly love the setting, I'm of the opinion that everyone is getting what they want. If it was reversed, and WotC was doing mostly lore books and adventures/DM supplements were on DM's Guild, I'd just buy my stuff there.
I guess I just don't really understand the constant drum beat that WotC is somehow making this huge mistake by not doing lore filled books. The lore is all right there in DM's Guild. You can have a hosepipe of setting lore for every WotC setting. What's the problem?