"Quality" is what we call the difference between what we like and what's objectively successful, not a property of any object. It's the name we give to one of many ways we confuse "is" and "ought."
There's nothing we can say about a thing with "quality" we couldn't also say by tediously listing every single property it has. The only thing that only "quality" can add is information about what the speaker thinks is good.
In other words, it's purely an opinion. If most people don't have strong opinions on most products, which seems true, then quality is null for most pairs of person and product—so "most people don't care about quality."
There's nothing we can say about a thing with "quality" we couldn't also say by tediously listing every single property it has. The only thing that only "quality" can add is information about what the speaker thinks is good.
In other words, it's purely an opinion. If most people don't have strong opinions on most products, which seems true, then quality is null for most pairs of person and product—so "most people don't care about quality."