I also support Blizzard (one of the only companies, I used to be a Bungie fan but you know how that goes) I used to have a g3 450 and when wc3 sucked it up on that then I bought my beast.
It sucked also because I've waited a long damn time for that game.
I would imagine he's also frustrated with paying $60 for a game and not being able to play it. I ended up buying my new computer mainly because of the performance of wc3. messed up.
I have to agree with you that Macs are a huge burden when it comes to games. However, i'm playing warcraft on the highest resolution all the time and I've never had any problems whatsoever.