Regarding the VAT on private school fees, I could see an argument that the government shouldn’t make decisions parents made about how they educate their children suddenly no longer viable to continue. It could for example be waived to allow already enrolled children to complete their current level of education at their existing school.
But relying on a tax break to afford this luxury, for that complete phase of a child’s education was always a risk. It was pretty obvious that it would eventually come under scrutiny.
Larger and less foreseeable rugs have been pulled out from underneath people and businesses in recent years, much to their detriment and especially so people less able to absorb the impact. They and their kids had to suck it up, and now these parents and their (partially?) privately educated children will have to as well. There’s no special protection for them against perceived unfair changes that restore fairness in the education system.