I grasp what you’re expressing, I really do. I’ve probably pondered this very thing too often in my life and can think of very specific examples where purchasing a non-brand name version of a particular product really froze up the decision making process.

However I think as I’ve gotten older, certain realities have occurred to me:

1. there is a fairly significant amount of people that would still pay more for the shirt the “right” logo and who would absolutely not pay less if it had the “wrong” (I.e., vs no logo). In fact, they wouldn’t wear the wrong logo even if the shirt was free. I include myself in this under certain circumstances and would conclude that some times the recognizable name actually helps put my mind at ease about the purchase, while being fully able to acknowledge that it was entirely a psychological thing.

2. Unfortunately there’s just simply no way of knowing this information (brand name product vs essentially same product without brand name) most of the time so letting that weigh too heavily on an otherwise thoughtfully considered purchase achieves effectively nothing.

3. The thing was probably entirely discretionary for my existence, so don’t buy it (otherwise, see #2…)