From what I can tell, they simply made an observation. You're the one applying a value judgment to their statements. Pointing out that different tribes use rhetoric to "other" outsiders isn't creating a false equivalence.
I've had a MathAcademy subscription for some time and it's quite good. I'd say it's best at generating problems and using spaced repetition to reinforce learning, but I think it falls short in explaining why something is useful or applicable. I don't know, most math education seems to be "here's an equation and this is how you solve it" and MathAcademy is undoubtedly the best at that, but I wish there were resources that were more like "here's how we discovered this, what we used to do before, why it's useful, and here's some scenarios where you'd use it."
That's actually quite worrisome. I don't really think twice about downloading the top result for things like PayPal or local banking apps if I get a new phone, for example.