Nope, as a Lemmy.One user, I cannot downvote anywhere. It's probably my only complaint with Lemmy.One, actually. I'm not sure I would have downvoted this, but it is the type of thing I don't want to see.
I use and love many flavors of Linux, but Windows and macOS are honestly cool too and I use all of them on a daily basis. It’s just cringey to me when people get all dumb and elitist about Linux.