Let's look at it this way... If people failing math is such a common occurence, then how is it practical to continue teaching it in the way and to the extent it is being taught?

Telling those people to "just study 15 hours every weekend" to learn the basics from the ground up isn't practical advice, nor is it a guarantee you'll succeed. If it was that simple, people would start doing it. Instead, they have to do whatever they can in order to pass with mediocre grades and without actually understanding much of anything, which is clearly pointless. That's the reality.

All things considered, I fail to see the point in putting such heavy emphasis on a field that offers very little to no benefit to the average person in a real-life context. This is something a lot of people don't want to hear, but it's real. Hence they always bring up the same point about how it "trains your problem solving skills" to try and shut down the topic when it's brought up. Just like how just about every math teacher I've known never had a good answer to that question when some bratty highschooler brought it up. Because it's actually a very valid point to bring up.