I'm willing to bet that for every article you produce which buggers the notion of mouse/trackpad support in iOS I can find five or ten clamoring for the feature. And where your 12-year-old view of the future is concerned, I will admit the Candy Crush Saga experience has likely peaked with a touch interface. Coincidentally, my children are 14 and 16 years of age and grew up around tech, iPads included. When they were 12 the iPad sufficed for their casual gaming interests and light word processing needs, but when they entered high school neither wanted an iPad as their day-to-day device -- one opted for a MacBook and loves the trackpad while the other, a gamer, wanted a Windows PC with very sophisticated mouse. So the notion that the future is mouse- or peripheral-free is spurious, at best.
And the idea that the iPad is not or should not be a laptop replacement is easily countered by Googling "ipad pro 2018 review" -- the first four results I saw for that search with telling quotes follow -- be sure to note Tim Cook's statements in the third item, below. Despite the frequent remonstrations in this thread by a small number of touch interface zealots, iOS and the iPad platform can and likely will evolve into a full laptop replacement, mouse support included, but when that sales/marketing inflection point finally happens for Apple is anyone's guess (it could be years from now).
https://www.cnet.com/reviews/apple-ipad-pro-2018-review/
“But the iPad Pro just isn't flexible enough, yet. The browser is not the same as a desktop-level experience, which can make it hard to work with web tools. No trackpad on the optional keyboard and no support for mice makes text editing cumbersome. Furthermore, iOS hasn't changed enough. It's way too much like an evolution of the iPhone, instead of a fully evolved computer desktop.”
https://www.wired.com/review/review-ipad-pro-2018/
"It doesn’t feel like the world is ready to treat my iPad as an equal to a PC yet—even if that iPad is a lot more powerful and user friendly. Now that Apple has declared the iPad is a PC, it should take more of the guardrails off of iOS and strongly encourage developers to treat it like they do the Mac. It’s time for iOS to grow up and get a job. The iPad Pro is one of the most powerful computers you can own. It could be the best PC, too. Or better than a Mac. For now, it still has to settle for being the best tablet money can buy."
https://www.theverge.com/2018/11/5/18062612/apple-ipad-pro-review-2018-screen-usb-c-pencil-price-features
"All of this data was used to support equally spectacular claims about what an iPad really is. It is a “magical piece of glass that can be anything you need it to be,” Apple CEO Tim Cook said, adding that all that power is “going to push what you can do on iPad, or on any computer, even further.” The overwhelming message was the iPad is more powerful, more capable, and more the future than any laptop — Apple’s own new MacBook Air included."
https://www.macworld.com/article/3321139/iphone-ipad/2018-ipad-pro-review.html
"Apple really wants us to believe a tablet can take the place of a MacBook, and it’s spared few resources in its quest to proselytize us with the 2018 iPad Pro. The iPad Pro is a beast, one that can hold its own alongside powerful laptops. It’s a stunner, especially with a redesigned Apple Pencil and Smart Folio Keyboard that feel more like essentials than peripherals."