Competent at what specifically? Basic daily life like chores and dishes? External motivators are way better than internal. I never clean "for myself". I clean because my wife needs it for her emotional well-being, and I clean because it would be embarrassing for guest or maintenance to see it.
Other potential options are therapy and medication, but I acknowledge the privelage of having them and that many people dont have that as an option. And obviously I'm just some dude so take it all as anecdotal evidence.
But for me it comes down to I will rarely do things for myself, so mentally framing them as for other people makes it easier
But sometimes "I just couldn't ' is the answer. You dont mad that a fish can't climb a tree. First you ask why the fish needs to be in the tree. And then if it really does, you help the fish get into the tree. Standing behind it shouting words of encouragement or tgreats mean nothing when a fish can't climb. Far too often people get caught up so much on blaming and shaming people for mistakes or failures that it turns relationships sour and the original problem still doesn't get solved.
I appreciate where you're coming from, I have ADHD too, but it's true that if the answer is "I can't do that" and "that" needs to be done... Then I shouldn't be the one whose responsibility it is to do it. I've taken on more responsibility in my current job than I can handle, and that was a huge mistake. It is not on my employer to just put up with that because I'm neurodivergent, obviously they have a role to play in supporting me but I also need to understand what my limits and strengths are and work within them.
If I have to drag you through a task because you aren't capable of doing it then it's easier to just not give it to you to begin with and do it myself.
Thats a real team-based solution focused attitude lol. Nowhere did I say "do it for them". I said help them. Because hey guess what, sometimes people can't do things by themselves. Like I said, standing behind someone and going "just do it" doesn't work. If they need help they need help. And yeah, at some point if they can't do it, they can't do it, and you need someone else to do it.
The key is finding responsibilities and roles that fit the disability. I struggle with the day to day chores, but I also have no problem with scheuled big, non-daily projects like deep cleaning or yard work or whatnot that i can hyperfocus on for 6 hours. It's all about strengths and weaknesses and finding people and jobs that are compatible.
Nothing you've said I inherently disagree with, your tone is just so aggressively dismissive and accusatory.