i don't see where this could be an insult. Camo is not a defending midfielder, get that out of your heads. even if he does step back a lot, the time he spends recovering balls is lost for him to act up front, where his true qualitites are clearly! i rather find it an insult making a team change (a lot!) after they've done rather well both in serie a and in the CL. And believe it or not, but putting on the pitch a playmaker at this moment WILL change fundamentally the running ways and behaviours of camo, del piero, etc...
what i want to point out is that i'm not generally against diego, but it is that at the moment, there's no need for a change, and if i'd have 30m at my disposal, i'd want someone for the left flank and maybe another reinforcement for the defense rather than diego.