my office supports MacOS, Windows (desktop & servers), and about 69 different versions of Linux (and we just turned off the last of the Sun and AIX unixes last week).
MacOS is the least buggy of all of them.
with a close second on Linux (depending on distro, some distros are a pile of …)
Where Windows is a constant nightmare.
luckily I only support the Linux infrastructure.
so yeah in my opinion, MacOS is no that buggy and they do address the bugs (for the most part).
–sb