Maybe I'm nuts, but the start menu's web search results seem to ignore default browser settings and only open in Edge.

Event better: I had a period of time where Edge would freeze before showing any content. So clicking a web result from start menu would just open an empty, unresponsive window. Windows would then tell me the window is unresponsive and ask if I want to kill it. Classic Microsoft quality. It's like that old org chart meme where Microsoft's departments are pointing guns at each other, played out directly in the OS, Conway's Law style. Very amusing.