The problem here I think is that people are confusing two concepts.
The syntax of values separated by commas is called a list. But so is the value in memory consisting of many other scaler values.
When I say you cannot have a list in a scalar context, I mean a list value. However, when most people say list and think of the things separated by commas, of course that is also a list to them. However, at no point is that list ever actually a list value.
So before you argue this to death, please be clear in your terminology. The representation of the list as values separated by commas could indeed be in a scaler context, but this would never ever be an actual list value at any time during the execution.
With that in mind, the answer is that no there never is a list of value in a scalar context: it is an impossibility.
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