I think adding difficulty options is fine but the accessibility of difficulty is risky because lowering difficulty is so enticing to the average person. I love souls games but I admittedly, in games where I can change difficulty on the fly, swap the difficulty to quickly move forward if I hit a wall. On the other hand, I spent 8 hours fighting the Guardian Ape in Sekiro and beating them is my favorite gaming experience of the last 5 years. I am pro accessibility but there should be some disadvantages to doing so (ironic, less accessible accessibility options). The easy one is making them a one-chance option. For example, moving your difficulty down from hard to normal, forces you to play the rest of the game at normal (Dragon Quest XI does this). There are other considerations that can be done, hidden difficulty that gives concessions (Crash Bandicoot, RE4) or attempt to estimate a flexible difficulty.

I think with difficulty there's always going to be a question of "can we make this easier".

I think the obvious query is "why should I be punished because you can't hold back your urge to decrease the difficulty" but the reply could easily be "why should Devs do more work so you can play a game not aimed at you?"

Tl;dr: Shits complicated, cheat engine is always an option for the time being. People who mock you are losers.

There are online modes in most of those games, besides Sekiro, that difficulty options would have an effect on, particularly invasions. Fortunately, invasions have been getting scaled back as time goes on, and the games have gotten easier in general, so we might converge on a game with difficulty options.