What I have seen online and in real life is that certain groups have latched onto the SNP because they think that they can manipulate that party. The tail has very much been wagging the dog.
At one point, the SNP government agreed to certain policies in order to retain the support of the Greens. The problem seems to be that once it sets a course, it finds it impossible to turn around.
Very similar happened with the Curriculum for Excellence. It was originally put in place by Scottish Labour, but when teaching professionals told the SNP that it needed to be scrapped the SNP government simply doubled down.
Lockdown made the problems with newer iteration of Higher and the National qualifications even more obvious and a new exam body is being set up, but the shake-up of education is taking place from the wrong end.
NB I find it interesting that so many news outlets are referring to CfE as "the SNP CfE". As I said, the SNP refused to scrap the damned thing but Scottish Labour's part in this has been conveniently ignored.
In my lifetime, I've voted LibDem once, and the rest of the time Labour or SNP. I say this to point out that my views on the curriculum are not driven by my political views. The 5-14 Guidelines weren't perfect, but they were a damn sight better than the current mess.
The point is that the SNP government has been told time after time that CfE and the related exams are not fit for purpose - but they simply refuse to admit that they're wrong and this seems to be their modus operandi for everything.
I'd hoped that this might change when Sturgeon gave up her position.