No, they are loved because of how consistent they are. I want to feel like when I beat something I really beat it. I always notice when a game is scaling up or down with me and it's infuriating. I don't want a "hard core" mode because I do not care about ball bustingly hard games. The whole reason I love dark souls is because it showed me a game can be challenging without just constantly trying to be hard all the time. The games are consistent in that they try to ensure everything is real and authentic and fair. Are they perfect? No, but that's the general guiding philosophy, and if you spend time learning the rules and using your brain, you'll be rewarded whether you're physically as good at pushing buttons and joysticks as anyone else or not.
One reason a lot of people felt put of by dark souls 2 is it felt like it broke that contract a number of times. You'd see a trap coming but you couldn't do anything about it. Instead you were forced into the ambush or whatever, and then had to fight it. You weren't allowed to overcome adversity by any means other than just facing it. That said Dark Souls 2 has other ways to become very overpowered so that these aren't so much of an issue. But still. That whole idea of, I can overcome adversity no matter what, even if I'm not the most technically skilled is for me what is rewarding. I am rewarded for using my head to figure out how to get around something that I am physically not able to do. If the games were harder or scaled with my physical skill, those brain moments wouldn't be required. The sheer difficulty isn't what is fun for me. The pushback that that difficulty engenders and the subsequent solving of that pushback is what is fun for me. Sometimes I git gud. Sometimes I git smart. Sometimes I just brute force it and come back later and go wow that was easy why was that so hard the first time.
The games already have multiple ways to allow you to make them way easier. That's kind of the point. The games are about overcoming adversity. That doesn't always involve increasing your raw skill.
The fact that the game rewards me either by me getting better or finding a way to make it a cakewalk is precisely why people like these games.
If FROM games were the type of games all about raw skill, then you might have a point, but for most of them, especially dark souls 1, 2, and 3, it's just not that simple.