The code matters less than the culture fit here. Nobody on HN can know if the code is really horrible or if the guy is really a guru, but it clearly sounds like

The code matters less than the culture fit here. Nobody on HN can know if the code is really horrible or if the guy is really a guru, but it clearly sounds like you are way out of sync with your workplace. If you have mobility and feel very confident in your assessment, you should probably just leave. You’re not going to convert everyone to see it your way any time soon and so you’re just going to be miserable if you stay and don’t buy in.