iserith
Magic Wordsmith
We've already gone over this reasoning several times upthread. I don't see any benefit to going over it again. Some of us agree with my position. Some disagree. That's where things stand. (Also, there are examples in both Chapters 7 and 8, not just Chapter 8.)The examples given in those rules are not an exhaustive list though. This is what's leading you into error.
The general rule is that 'Climbing does not require a check UNLESS there is a complicating factor (such as a slippery vertical surface, a sheer surface with few handholds or similar complications)' at which point it MAY require one (DM's call).
Those two given examples are not exhaustive. They just serve as a benchmark to assist the DM in determining when to call for a check.
Climbing a rope upside down and feet first (for example) would clearly call for a check and it's not spelled out anywhere in the text.