I can see Tekton's feet attachment method making sense. Let me explain:
To attach a removable foot, you can have a threaded insert in the cabinet with a hole that goes only partway through bottom of the cabinet, or you can have a threaded insert with a hole that goes all the way through the bottom of the cabinet. The latter allows the use of a stronger type of threaded insert. (And yes, I realize there are other possibilities.)
If the hole only goes partway through the bottom of the cabinet, your choices of feet are limited to feet with posts that do not "bottom out" against the material beyond the end of the hole. But the cabinet is airtight without the feet being installed.
If the hole goes through-and-through, not only do you have a wider range of feet choices, but you also probably have a stronger attachment for the feet. And if you wanted to bolt the speaker to the top of a stand so that it couldn't be toppled off the stand, the through-and-through hole configuration makes that simpler (you don't need to get the bolt length exactly right) and probably more secure (the kind of threaded insert that has a metal "lip" on the inside of the cabinet is much stronger than the kind that merely relies on teeth that grab into the sides of the hole for the threaded insert.)
This has nothing to do with the primary issue this thread is about, but imo the foot attachment method is not something Tekton "got wrong".