Perception is a funny old thing.
For me, the early 3.5 edition books weren't worth the paper they were printed on. I had zero interest in them. Just retreads of the same old stuff. It wasn't until later 3.5 that I bought pretty much any WotC books - Tome of Magic was one of the best rpg books I'd bought in a long, long time. The Environmental Series books were fantastic.
Complete X books? Pass thanks. Ohh, gee, let's jump on the power wagon yet again and make the game overly complicated to appeal to people who think rules mastery is a great thing. No thanks. Me, I'm perfectly happy to see one, maybe two, character based books in the entire run of 5e. Steady churn of character based books - and for me, one per year is still FAR too many? No thanks. I'll wait until WotC produces something I actually want to buy.
AFAIC, the fact that I don't have to audit every character sheet at the table every level is a GOOD THING. I never, ever want to see anyone using a spreadsheet program at my table again. Whether 3e or 4e, didn't matter. 4e had what, 40 base classes released in 2 or 3 years? How in the world could I possibly keep up? What's a "warden"? And how does that fit into my campaign world?
Heck, even in our 5e game, the presence of a Swashbuckler Rogue has caused problems. "I get my sneak attack" "why, there's no advantage and no one is near you" "Yeah, I'm a swashbuckler" "Oh right!!" is a conversation that comes up nearly every session. And it's not like this is a newbie table. All of us have been gaming for over a decade, through multiple editions, and most of us have DM'd at some point or other.
Add in a complete book of character options? Forget that. Endless wrangling about how X or Y works? If I wanted that, I'd go back to playing 3e or 4e.