For the most part they can't even effectively teach basic algebra.
"New York high-schoolers who took the Regents Common Core Algebra I exam this month had to earn just 27 of 86 points, or 31.4 percent, to pass. "
https://nypost.com/2017/06/25/students-taking-regents-math-test-only-needed-score-of-32-to-pass/
Anybody else who had their finger on the scales this heavily would be prosecuted for fraud.
Covid has wrecked so many kids’ educations.
Across the board test scores are down over the last three years. Online learning hurt many students ability to absorb information and hurt their development of social skills. This is true from kindergarten all the way to high school.

I completely agree with the points you've made. It's shocking to think that probability is not given more attention in schools. As someone who struggled with statistics in college, I can attest to the fact that a proper foundation in probability could have made a huge difference."Why They Don't Teach About Probabilities In School ?"
In case you missed it they do teach about probabilities, and
geography, reading, writing, arithmetic, science, history.
Alas...
Even in essay writing, which I think it's the base for learning, understanding probability and statistics will help in analyzing data and making predictions, which will help in constructing solid arguments and drawing accurate conclusions. That's one of the reasons why I developed this site https://assignmentbro.com/ca/business-analytics-assignment-help so students will have access to quality examples.
It's time for schools to recognize the importance of probability and make it a more prominent part of the curriculum. This will not only benefit students in math and other subjects but also in essay writing and critical thinking skills.