Aside from what I guessing is just the usual 'techie' anti-Apple drivel, I'd be keen to hear why you think Apple gear is "no good for anything requiring grunt"
As for the second paragraph. Guess what? Those guys make the money, and if they want a nice shiny expensive MacBook just to open PowerPoint then IT gets off its bottom and provides. That's business.
These kind of people just see shiny stuff without seeing the actual impact or cost to the company. I've seen this problem before when some art idiot where I worked bought 500 macs out the blue and said make them work. It cost the company literally hundreds of thousands of pounds in contractor fees and additional hardware to get them implemented into a Windows infrastructure. All they were used for was for students to use youtube and facebook. /faceplant
MW