PSA: the old malzahar was cancer
literally one of the least interactive champions in the game.
reverting his rework wont resolve any of his issues, nor make him more of a healthy champion than he is now. so stop asking for reverts, its not going to happen.
it makes more sense to keep working on him than reverting one cancerous iteration into an older cancerous iteration.
the only reason they reverted
was that despite his age, his his kit was overall decently designed with clear strength and weaknesses, and there was simply no need for his rework in the first place.
DID need changes due to an unhealthy kit. the ones they gave him didnt help, but that doesnt make his old kit actually any good or better than the current one.