Cue the trolls who will ravish the thread with “see? SEE? macOS isn’t perfectly secure!” and conveniently avoid/ignore the observation that it took some of the best in the field to find the problems, which will likely be fixed on >90% of Macs within days.
Likewise for Linux (approximately, depending on users, which is always unpredictable); and a bit longer for Windows, since the March Patch Tuesday was only released two days ago so the next one is a month out, assuming they don't delay it an additional month like they did in February (very unlikely).
Which is precisely why I'm -not- going to ping the Windows list to this thread. :-)
When I find an article that talks about the IE/Edge exploits, I'll post that and ping the Winlist. If you happen to see one, let me know... thanks!