I guess it's just I think that the pursuit of knowledge shall have nothing to do with any one 'identity' or 'ideology'. It is orthogonal to that, or it just doesn't work and then why teach something that does not work.
I can also agree that it is very difficult to do and learn Calculus when your understanding of Algebra is limited or out of practice as someone who went back to get an undergraduate degree after almost 2 decades of not doing math. Is Calculus actually essential for critical thinking ? No and it does serve as a stand-in for this in many STEM degrees and if someone is lacking in understanding of the basic principles of algebra then it is going to feel like torture to solve calculus problems even if you can understand the concepts.
Now the conventional wisdom seems to be that you do have to be a math person, and teachers had better work hard on cultivating a “math person” identity, because otherwise there’s no way their students can learn math. I think this is a false belief that will make education quite a bit worse if acted on. I would never have learned to write well if teachers told me I needed to identify as a writer first!