To add to this, I've been playing games since arcades in the 80s. I believe this experience means I am decent at determining the kind of combat I struggle with and what my limitations are.
Relative to the baseline of other players, I have never struggled so much in any combat content as I have in FF14 DT dungeons and trials. I am pretty good at FFXIV PvP, for example, where my APM is way higher than in PvE. What I struggle with is processing tells and moving promptly to the safe spot. PvE button bloat is a secondary problem.
I have put in effort, I have analyzed why I struggle. Because of this, I get quite steamed when I'm informed I could easily clear savage, and that the only thing holding me back is lack of self-belief and effort.
How I personally interact with the content is largely irrelevant since I'm leaving. However, I have spoken to many players who have experienced the exact same issues as me. The monothematic design philosophy is particularly punishing to a subset of the player base. Thus "follow your dreams, you can reach your goals, beefcake!!!" chafes more than a little.