It’s a python plugin so they’d have to find a way to support python plugins in android (which I heard is not trivial) or port it to C++ and make it Krita core.
Also we have 3 separate votes that are all related to improving the Comic Manager plugin (this one with 14 votes, this with 9 votes, and this with 7 votes). Aren’t stuff like this usually merged into one thread? Is it not possible to do so if there are already votes?