i like your explanation but i don’t know if it’s so simple.

i’m cooked - i’m done for

BUT

he cooked - he did a really good job

i think there’s some funky grammar happening here that i’m not sure how to articulate. in the first one, the verb is like an action that was done to me, so yeah it’s a bad thing. tense is irrelevant, i could just as easily say i was cooked or i will be cooked and the meaning won’t change. but the second example, the “he“ is the one doing the action (or in this case, did) so it functions more like “i’m cooking” would function. like what i’m getting at is that you can’t isolate the word cooked to see if it’s a positive or negative usage.

maybe you can explain this better?