This is no way disregards the difficulty of living with an actually severe case of ADHD but is not what most of these people are dealing with.
EDIT: many seem to have misunderstood what I mean by this. I’m not saying these people are only claiming to have ADHD to use it as an excuse. What I mean, is that they may very well do have, and they’re using it as an excuse. Mostly to themselves.
TL:DR You’re not lazy, there’s brain chemistry at work
There’s a depression comorbidity with ADHD for a lot of adults.
https://bmcpsychiatry.biomedcentral.com/articles/10.1186/s12888-017-1463-3
Which can lead to executive function disorder, so you “know” you can do t you just cannot find the energy or will to.
https://psychcentral.com/adhd/adhd-executive-dysfunction
This is why early on stimulants were perscribed to patients with ADD/ADHD
https://www.additudemag.com/history-of-adhd/amp/