Your presumption is probably correct, however if that is the premise of the patch it is incorrect in detail, since we've already fixed test_queue specifically to be runnable with -m unittest without adding a load_tests.  I haven't looked at the other modules Matt is looking at, but it may well be that they can also be fixed without a load_tests.

The test_queue fix is issue 14333, also opened by Matt, but fixed by Michele.

I think we should make the tests runnable by unittest, but that we should use load_tests only if making discovery work for a particular test is too invasive.