The hope was that good RLVR on relatively contrived datasets (like benchmarks) would be generalized to good software taste, which has somewhat succeeded but also the models fail in horrible ways still
And the hope beyond that is that good skills in fundamental problem solving tasks (coding, math) would generalize to tasks beyond math and code, which did happen but less so
Other domains I am not sure but I've heard from people like Cal Newport that the rate of increase outside of code and math are not as equally impressive