In fact, they could've just kept it the same as Windows 10 because this exact system was under "Choose defaults by app", along with a "Choose defaults by protocol" option, at the bottom of the defaults apps pane.
Windows 11 is a step back from more granular control considering there is no longer the option to change defaults by protocol. Instead, you need to go through multiple apps to see which protocols each app supports rather than going straight to the protocol/file type you want to change the default for.