(They do help clubs sell things, taking "7% of income", so they do have a revenue stream, but the money that Slack wants would pay a veritable army of student interns.)
It's a way to create many forms of art, solve everyday problems and automate a plethora of machines in our homes.
You sound like an accountant whining about kids learning about calculators and statistics.
You don't want an entire generation of people who can barely operate the devices that enable and control a huge portion of their lives.
Kids will benefit immensely from being able to logically reason, and will be less afraid to repair or work around shoddy software, even if they never write another line of code in their lives.
Professional programmers dont fear kids taught to code any more than novellists fear kids taught literacy or accountants fear kids with numeracy. If anything, they know personally how important it is to learn these things.
I would love it if future folks can write their own random scripts without needing a developer to do it for them.
I would love to see more people writing software. There will always be advanced work that needs doing. There will always be larger challenges.
I want the world of the future, where every 10-year-old knows calculus and python and is incredibly capable, and then I want to see the future we get when they grow up.