I wish that was the only thing. I work in science/engineering and lots of software that control equipment are only windows.
There are options like using virtual machines, but it's way to cumbersome and prone to errors, you don't want a measurement that took half a day get ruined because of a stupid communication error.
I actually think the opposite. Reddit is here to stay, sure. But Lemmy will become a more niche space and with better quality for those interested, but not necessarily mainstream, and that's ok.