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I noticed that the CLI is able to figure out the right BrowserType to use when it is launched from the command line:

playwright open --device="Desktop Safari" wikipedia.org  # Webkit
playwright open --device="Desktop Firefox" wikipedia.org  # Firefox
playwright open --device="Desktop Chrome" wikipedia.org  # Chrome

But the documentation seems to say that I have to initialize a BrowserType before I can pass the settings to the context, which partially defeats the purpose of the device settings.

I can implement my own logic do initialize the right BrowserType for each device, but as playwright open can already do that, that seems superfluous.