Again you refer to Rene. Don't tell me you would've been hugely critical of any other change if he had remained as Moyes' assistant manager? He let Steele go - he's a keeper trainer. De Gea liked him. That's nice - but he's a keeper trainer who has been replaced by a man who is, by all accounts, a very competent trainer who has top level experience to boot that Steele can't match at all. And De Gea hasn't looked too shabby of late, has he? I wouldn't say he is the prime concern here.
He has brought in Round and Phil. The latter is a United man. The former is Moyes' man, the one you could dismiss as a "comfort" assignment, which would be somewhat stupid, though, as it is virtually unprecedented that a new manager doesn't take anyone with him. He has made Giggs a coach, a man who represents a winning culture and the continuation of said culture more than anyone. He wanted to hire Scholes too - but he wanted a break, and might very well be back on staff before too long.
Your Apple analogy is not apt for two reasons: Moyes hasn't thrown out all the experience at all. And a football club isn't run like a computer firm. Not even close.
If Rene Meulson or Millhouse had been an ideal assistant manager - then, yes, by all means, it would've been a bad move on Moyes' part not to insist on him staying on. But he wasn't. And the idea that Moyes has thrown out everyone who contributed to our success under Fergie is misleading at best. We don't even know to what extent these people did contribute. Which is why I asked to you ponder the factor that is Fergie himself. Did you think it would be seamless, this thing? That replacing the greatest manager ever would be a walk in the park? There is no precedent here. On some levels a football club is just another business these days. On others it thankfully isn't. What Pep or anyone else in football has done elsewhere doesn't compare at all, though it's far more relevant than what happened when Steve bloody Jobs stepped down.