Microsoft now has implemented "compare with Bing chat" button when you visit Google Bard in Edge
When you visit the Google's chatbot bard's website in Microsoft Bing. A New Button pops up besides the search bar which lets you compare bard results with Bing chat's.
I have no idea why they implemented this, well maybe to show off the their chatbot is better than bard or something?
To be fair that could be a lot worse. I was expecting injected webpage content. I think this is acceptable and serves as a quick way to compare multiple sources. I dislike that it's Microsoft more than I do the actual "feature".