easy/disposable/cheap combined with a wide selection of possessions and
requires research/lasts a long time/expensive combined with a minimal aesthetic about what you need to own.
Don't get stuck on the semantic argument of if "best" means absolute single best, it's that idea that is the interesting and potentially powerful part.
The parent seemed to be saying that this state (i.e., between the two extremes) was "not very satisfying", and that without strictly adhering to "The Best" philosophy you'd end up with all crap. That's primarily what I'm objecting to.
I agree that it would make perfect sense to have your choice about clothes differ from your choice about laptops or cars. A commitment to one philosophy for everything you own seems strict for no reason, although I have personally found that the minimalist aesthetic ends up spreading to seemingly unrelated parts of your life once you start enjoying it.