I'm extrapolating so I might be wrong, but what I get from this is that they boosted the benefits of the first scadu fragments but nerfed the benefits of the later ones, which is just changing the scaling but ultimately results in the same difficulty
Accessibility is an extremely important topic and Elden Ring could absolutely be better in that aspect.
Difficulty, however, is unrelated to accessibility. Disabled people should be able to play difficult games -- that's what accessibility is about, letting people with disabilities experience the same content as everyone.