If you don't understand the mechanisms of arithmetic, algebra is going to be a challenge. If you don't understand algebra, lots of other things that are applicable to daily life and trades are also out.
I use geometry and trig for gardening. I do unit conversions (algebra) in cooking. I use simple probablilty in gaming.
All of this comes down to my ability to perform arithmetic operations on abstract symbols. A calculator can give me the numeric results, but it can't help me manipulate the equation to get the answer I need.
You didn't mention about how they said all the MoonSwatch models would be available for purchase online and then later pulled that back and none of them are available online.
Also, many of those who were pissed about the MoonSwatch ripping off Omega were also pissed about not being able to buy one.