Looking at the maths issue as one who works in accountancy and sat their last university maths exam in 1983 and their last university statistics exam in 1985, often the reality is that he is correct.
There is very little actual maths skills I have used in the intervening 30 years, some work on sampling and confidence intervals, regression and correlation, the occasional need to reduce a problem to a simple piece of algebra, but since excel came along really only if it is so straightforward it is faster doing on paper, a little bit of calculus re business finance (sometimes more to understand a theory than to apply). Reality is it is arithmetic, fractions, ratios that dominate as actual skills used, these are school subjects from what was then O level arithmetic (In Scotland a distinct O level from maths)
I do not disparage maths, large numbers of careers use it all the time in sciences/engineering/architecture etc, I have used basic geometry at times to work out land areas of difficult shaped property sites (Split into shapes like rectangles / triangles etc to work out area) but for a lot of people it is really not used, three dimensional vectors, Mclaurin / Taylor, trig functions are now all distant memories.
When my children were in secondary I helped them with their maths, I was still okay up to 4th year (Standard/Int 2) but at Higher I soon appreciated that whilst I was familiar it was mainly forgotten and hired a tutor.
My slight caveat though is that being comfortable with the ideas is probably useful and the world is changing at a fair lick as to what is needed in the workplace, so I must admit if I were recruiting I might well want someone with Higher/Advanced Higher, not because I want them to solve maths problems but because it tends to demonstrate a certain rigour in how they think and demonstrates they can master something both abstract and technical; the most important employee skill is their ability to learn.