Correct. Important context for this is the ongoing balloting for strike action over teachers pay. Anyone who can do maths can read their own payslip and know when they're better off in the private sector doing anything else. The recruitment shortage is serious: https://committees.parliament.uk/committee/203/education-com...
> A 2022 report by the National Foundation for Educational Research shows that the teacher supply challenge is marked particularly by a lack of physics, chemistry and maths teachers. For physics, only 17% of the target to recruit 2,610 trainees was achieved, with only 444 new entrants. The Committee was recently told that at this current level of supply, it would be impossible to carry out the Prime Minister’s proposal of requiring pupils to study maths until 18.
In other words, this is already impossible, and no amount of "mindset changing" (wishful thinking) is going to change otherwise. You're only hearing this now because the local elections are soon.