Yeah, that whole thing still pisses me off to no end. First off, I don't agree with him stepping back for the incident. But to then go all "yeah, I need a mental health break", that just reeks of fishing for public sympathy.
But Smith being captain again, oh boy, that would be a bad look. Not only that, Sandpaper-gate should stick on him for the rest of his career. Maybe not define him, his batting does that plenty, but with all the historic corruption and shenanigans in cricket, he should never been cap again, hell, not even vice-cap imho.