Is there any plans to port this to run natively on Linux? (it runs just fine with Wine but the Discord RPC doesn't work through Wine which bothers me a bit bc I like RPC)

there are currently no plans to port this game or the other Catto Boi games to Linux due to several DLL dependencies that are built only for Windows.
there might be a third-party program out there that could fix your RPC problem, though. just found this one in a search which could help: https://github.com/EnderIce2/rpc-bridge