It's a point of principle for some people, not technology. I've often seen posts here on El Reg to the effect that "Google is Evil"; posts which go on to describe the many ways in which the alleged 'evil' is perpetrated on unsuspecting masses, and which should be avoided at all costs. I've also seen countless posts denigrating Microsoft along the same lines, and advocating Linux, for example, because it's much less 'evil' than Windows.
Thus, for some, and possibly even the litigants, Apple may be 'less evil', and a trusted brand they signed up to in order to avoid all those 'evils' that Google and Microsoft are accused of here and elsewhere.
For those folks, who buy or subscribe to Apple's goods and services specifically to avoid Google's and Microsoft's products and services, learning that 'the evil ones' are actually at the back end of what they'd believed was 'not evil' will be the source of their ire, not some blinkered techy blah about encryption, hardware manufacturers, or China.