Why do submissions get flagged? Serious question

Why do submissions get flagged?

There was a huge discussion recently about the new Lidl Cloud, incl. doubts that it just may be rumours. https://news.ycombinator.com/item?id=23151069

Since they new Lidl Website is out now I published the link:

Posting: ------------------- Lidl Cloud incl. test access https://news.ycombinator.com/from?site=stackit.de -------------------

And got flagged immediately. Serious question: Why?

The level here seems to get lower by the day.