Basic Government 101 tells us that there are three co-equal branches of government on the federal and state level. The work and powers of the branches overlap occasionally. For the most part the branches stay in their own lanes.
Not so, at the moment, in New York State. The state Court of Appeals has mainly removed the Legislature from the process of the post-census redistricting of congressional and state legislative lines and handed that power, by order of a state Supreme Court Justice in Bath to one person, who was unknown to most everyone until recently.