The article has a low signal-to-noise ratio. It is just a single paragraph claim that doesn't delve into anything nor inform its audience of anything. Why shouldn't it be flagged?
If this claim was posted as a HN comment without citation or further explanation it would likely get flagged, why are submissions held to a LOWER standard?
The entire blog is this one post, so that signal-to-noise ratio is... a singularity by now.
Yeah..
This is not default behavior, it lets you choose to enable this feature the first time you open the Design tab.