@Tamed
If Kobayashi's Dragon Maid and Made in Abyss somehow made it on air, Mizore-chan's definitely capable of getting an anime. Tokedase! Mizore-chan is legitimately cute slice of life featuring kids being kids and is about on the same level as something like Barakamon. Compared to manga released by a guy who's written doujin purely about boobs, and a manga that features a straight up dick monster, Mizore is safe as hell.
They're probably waiting on more material/trying to time things right with studio scheduling.