The thing is, it’s “only” a simulation, and with DFT stuff (the approach used in the simulation) there is usually quite a bit of wiggle room to get some interesting results. It’s still kind of a big deal, it says something like “hey these people’s results might not be complete nonsense”, but I’m still waiting for someone reproducing something experimentally.
PKHeX works in wine, I’ve been using it just fine. You do need to install some Microsoft framework into your prefix, but it prompts you to download it when starting up for the first time and then you’re good to go!