"Everyone is a spellcaster" is reductionist, but you know well what people meant.
They meant exactly what they said. Especially because they would say it. Over and over and over and over. Folks particularly loved the "Fighters shooting lightning bolts out of their arses" format, even though that
literally isn't a thing.
The warlord can be perceived like that because many consider HPs at least partially meat points, albeit never completely.
It really can't. Especially since even for people who see HP as meat points (a ridiculous notion, but it persists nonetheless),
HP never actually cause permanent wounds or maiming. It's inherently disingenuous from the start, much like "dissociated mechanics."
Better to not go on the financial part seeing how the thread disclosing actual facts went.
I mean, it objectively sold well initially, and the argument is that it got trashed by folks who hated it for various reasons (often, though not exclusively, without having ever read the text itself. I would know. I was originally a hater, who had been taught to hate it without reading it by other people I once trusted...who
also hated it without reading it.)
Fireballs were de facto square.
"Square" and "circle" are identical shapes on a chessboard. (And, likewise, sphere, cylinder, and cube are all identical figures.) That doesn't make the
physical object a cube. It's a rules simplification to make life easier, because at distances of 50-60 feet, it's literally only an extra like 5% area due to the alternating 2-1-2-1 method's approximation.
When people looked at tieflings thought about color-swapped draenei, especially alongside bloodelf-esque high elves - and together with the AEDU "different cooldowns", guess what happened.
Aaaand guess what, you're doing it too! AEDU isn't cooldowns. It isn't even remotely
like cooldowns. It's a lazy comparison that reflects a poor understanding of
both games.
And more importantly, those can be inexact opinions (some of those at least, and that's debatable) but this doesn't make them "misinformation" as something maliciously conceived to make 4e fail. This is borderline conspiratorial.
Having "inexact opinions" is one thing. Loudly and proudly shouting them, over and over and over and over, is active misinformation. And yes, it absolutely was maliciously conceived to help make 4e fail. That's what the haters
wanted. And they won. They ensured that it did. Of course, WotC was practically an accomplice on that front, and the hand 4e got dealt was about as bad as it could be. But active, intentional misinformation campaigning from haters was a major component.