But more and more jobs need basic Maths skills. Normal life is more complicated these days with internet banking, apps, pensions, insurances, utility contracts, etc., so again, even people not needing Maths in the workplace will need basic Maths skills just to navigate normal life. It really is an essential life skill - even just to work out which option is better on supermarket shelves when comparing different sized items or comparing products on BOGOF or 3 for 2 offers against other cheaper items sold singly.
Fair enough, unless you work in STEM you probably don't need to know the equation for the volume of a sphere, but you still need basic numeracy skills such as fractions, percentages, areas of basic shapes, etc. Tradesmen need to know how many bags of cement to buy to lay a patio, how many tiles for a kitchen floor, how many rolls of wallpaper for a lounge, etc. All that is basic numeracy. Chefs need to know the costings of the meals they cook and how to scale up/down recipes for bigger/smaller portions etc. Self employed people (even window cleaners, gardeners etc) need adequate numeracy to deal with tax returns, invoicing, etc.
I'm not saying that the current GCSE Maths is suitable for "life" numeracy - it's deficient in lots of ways, but a lot of it IS applicable to "normal" people for their "normal" lives. Personally, I'd rather see a "numeracy" exam taken, something akin to the 11+ Maths paper which really does test basic numeracy skills, to concentrate on the basics. With the Maths GCSE only offered to more able students who can actually access the syllabus. I think the foundation GCSE Maths paper is an attempt to do that, but it's still "too heavy" on more complicated Maths, and some schools have "middle" streams/sets where part of the class are doing foundation and others doing the "full" syllabus which is crazy and won't help the lower level students at all! To my mind, we need two completely separate subjects at school, one called "numeracy" and another called "maths" - one being life maths skills and other aimed at STEM.