It does support, I’ve just openned an account! It supports only importing from MAL actually, and it offers it during the profile creation. Now for the other way around, AniList doesn’t support exporting, which is kinda lame… but seems there are third party offline and web tools that actually can extract data from it, which is nice

Sub integer rating sounds like a nice thing! Sometimes I miss the 0.5 step and simple 1-10 ain’t really enough. I’ve used more rigorous scoring to achieve a better view of what I liked more on MAL which is a good thing, but nevertheless, I still miss that .5 I just might give Anilist a shot, I hope it supports importing from MAL