The downgrade wasn’t difficult, it just took a bit of time, its slightly more complicated if like many others you own the game on Steam. I’ve been playing this week. A little buggy but so was FO4 at release.

When there’s some new standard for the best way to measure true temperature in fifty years, all of the current figures will be in question. We’re already adjusting old data. Why not compare raw data publicly too?

No one outside those areas cares.