Yes, but since you aren’t using any of the flex-related properties other than flex itself and wrapping, the layout you’re building isn’t substantially different from normal block-based layout and wrapping.

My point is that flex readily handles the use case you describe.

If we took your example and added some flex-specific behaviour, say justify-content:space-around, how could we readily left-align the final items with flexbox here?

Elsewhere in this subthread (5+4+4+4 distribution), you also deem flexbox incapable but I can think of how a frontend developer could make it work.

It’s difficult to discuss that when haven’t shown us what you have in mind. Would you like to elaborate?

Perhaps you are unintentionally looking for instances where flexbox cannot do something and then imposing constraints where flexbox is not an appropriate tool.

I would prefer to say that flexbox would be a more useful tool if it could also handle these finer details. There are numerous blog posts and SO questions about limitations in the current version of flexbox and how to work around them, so I think it’s fair to say that the challenges I’ve described here are not unusual.