It's an AI image generator. There's thousands of tools that do this exact thing, and it seems their only "benefit" is infesting search engine image results with their horrible low-quality output.
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On a related note, here's another great LLM feature Microsoft seemingly failed to promote: instead of returning bits of page content or the description meta tag, the Bing API now gives you utter slop[0] for website descriptions!
Designer is more than an LLM grafted to a text field. https://designer.microsoft.com/
If you go to microsoft.com, which link at the top would you click to get to Designer?