Why is the Alarm ringing when I have my bluetooth headsets on? (Android)
Unfortunately there is nothing that we can do to change this. This has been a "feature" of Android for a long long time.
You are not alone thinking this is strange. We agree! It has been reported to the Android team at Google many times, but they claim it is by design. Here is the issue on the Android bug tracker. https://issuetracker.google.com/issues/36914371 It was opened 10 years ago!