Earlier quoted context omitted.
[2] is explicit, saying "even when enabled via AMD hardware and/or software." If it wasn't clear, it's the footnote in [1]. Overclocking has always voided warranties, it's why overclocking has traditionally been the realm of enthusiasts and tinkerers who generally aren't concerned with reliability, safety, or monetary value and know what they're doing. The more mundane users really should be made aware that overclock…
amd expo is covered by warranty. expo also does not overclock the cpu. that amd expo changed cpu voltage was a decision by asus, not by amd, the asus implementation is basically not up to spec.
AMD themselves also make it clear that users who overclock "assume all risks and liabilities that may arise out of overclocking and/or undervolting AMD processors" per the footnote on their EXPO page.
Overclocking will void warranties, this is a fact that anyone who wants to overclock has to accept. AMD should be ashamed for hiding the literature behind a hidden footnote, but that doesn't excuse end-user ignorance.