There's nothing more frustrating than completing a dungeon, only to be rewarded with a mostly useless summon.
You get to know about the enemy you can summon a little more, sometimes it's the only way to learn a specific enemy's name, and that's enough. The same principle when you're finding a spell while playing a Quality build - you won't use it, but it has information about the world that you will learn
This is a bad analogy, because while a Quality build may not use a spell, the spell itself is at least useful as an item. The game balance is maintained, even if a certain item isn't meant for a certain build. It's still useful knowing it's there for a future playthrough, or if you decide to respec. It's far less frustrating finding something that's not for your character vs something that's just plain bad and will only waste space in your inventory.
Also, I will repeat what Hell Swarm said: LOL a name and a description is a reward now?
But even if I agreed with your point, wouldn't it still be better if you got the name and the description AND the summon was actually useful as well?
Virtually every build in the game can make good use of summons, so having a lot of nicely balanced ones would significantly improve the gameplay for every single build. Which would be amazing. Instead, we have a mountain of crap and a handful of usable options.
The deep lore of post-it notes and absolutely no story as to why you have to murder every creature in the world. A tale truly worthy of toilet paper.
To be fair, the "read item descriptions bro" rhetoric used for virtually every DS game is a cope used by idiots to defend the game's lack of actually good lore. A way to defend a bunch of vague item descriptions that say almost nothing about a larger world we know next to nothing about. Almost the entirety of the "deep lore" has been pieced together from vague descriptions and the occasional piece of environmental storytelling, and we actually know next to nothing because FROM hasn't said anything significant about the world in any of their games.
At most, we get vague and nearly useless item descriptions like "A headpiece worn by the knights of yadayada, who would occasionally do suchandsuch. Boosts fart damage negation".
Souls games are decent at explaining the moment-to-moment story (often they will just have a character exposition-dump the story on you, like Kingseeker Frampt), but their lore is absolutely awfully told. Playing soulsbourne games for the lore is like watching porn for the story, and anyone who makes gameplay arguments for lore reasons is an idiot.
DS lore just kind of sucks. The game tells us virtually nothing, everything else is guesswork, which just comes across as lazy. I know that's not a popular opinion, but it is the truth.
If you think DS has good lore or that item descriptions are important, I'm sorry but you fell for the memes. Now go watch some Youtuber """"explain"""" the lore over 20 minutes of speculation because we're given absolutely nothing to go on.
There's no point collecting all the grave wax when we're only going to be using the Mimic Tear and 1-2 other summons for the whole game.
Just because you did that, doesn't mean everyone did that. It's a pretty big distinction.
You do know what an optimal strategy is, right?