I don't think From Software has any obligation to make any kind of easy mode.
I'd argue that difficulty is kind of arbitrary.
It's easy to define an easy or a difficult mode in the context of the same game. Clearly enemies with more health are going to be challenging. But "easy" in one game can be a very different thing from another game. For example what if From Software made the current mode the "easy" mode,and made a more challenging mode? The real crux of the conversation is about making the game more accessible, and the question there is how accessible does a game need to be?
What kind of standards should that easy mode have? I think the best way to think about it is statistically, what percentage of players should be able to complete easy mode?
Someone might put out that 95% of players should be able to get through a game like Bloodborne. Or some other (arbitrary) percentage.
However you put it, these difficulty standards are at least somewhat arbitrary. I don't think that any developer should have some set standard like that, that they should be aiming for.