The fan boys are out in force!
I just bet none of them are old enough to remember hand assembled code! (which I still do!)
It's the same argument I got 20 years ago when I was programming on my Mac + and all my friends could only afford a cheap PC clone!
The "guru's" want to be "needed".
AS has been pointed out a few times here, I am a masochist that likes to build things out of 7400 chips, Like my "life" engine, 30 years ago being able to do 25 generations a second (frame rate) was a huge deal.
I look at Arduino as programmable hardware, which is what PIC's, Propellers and ATMEL hardware really is. If you want some serious "grunt" you use a non-Harvard architecture chip.
What happened to "the right tool, for the right job"?
Where's my sledgehammer, I gotta drive some tacks into a piece of balsa... :-)