I have no idea why the Republican legislature doesn't just pass it. If Hochul can get her gerrymander done and passed with no opposition then Republican's shouldn't disarm and allow Democrats to take more seats than they have to.
I literally can't understand the Florida legislature's thinking at all.
1. Legislators do have concerns in redistricting beyond just "More same party seats = good". There are members of the legislature that have problems with the geography of the map beyond just a partisan division perspective.
2. Legislators want to avoid a potential VRA lawsuit that would get the whole map potentially thrown out. A slightly less gerrymandered map that leaves black districts alone avoids that and is a safer bet for the party.
3. Despite being members of the same party and PoLaRiZaTioN being high right now, the FL legislature has no desire to be jerked around or dictated to by DeSantis. He stepped in near the end of this process with an ultimatum, threatening vetos, and making no concessions. I think part of the legislature's opposition is that they don't want DeSantis to think that he can walk all over them.