Mac had more pressure on him in 2022 than any other point in his career. With the added pressure, his footwork broke down (it can be argued that his whole throwing motion broke down). Maybe that is to be expected with any young QB and that is why defensive pressure is commonly used against young QBs. The argument that his footwork was OK when he was at Alabama with all day to throw, and better in his rookie season when the play calling was very conservative (dinking and dunking which led to an offensive collapse over the last 5+ games), is not a strong argument.
I think Mac will recover and be better for the mistakes he made in 2022 - I have said this previously. Mac knows he broke down, and as you note, looked better at the end of 2022 (as opposed to looking worse in 2021). Having said that, I am only guessing. I do not think Mac has faced adversity like 2022 in any previous seasons, so I do not think comparisons are valid. We simply have to wait and see when the bullets are flying. We will know this season.