Its a lot of wishlisting from disgruntled customers.
From a sales and UX perspective the iPad and Mac are very different products. Apple offers the iPad as a $300, $600 and $800 computing solution before we get to the $1k price point and the M1 Macbook Air.
Apple's billion-dollar market research will tell them a person buying a $300-600 computer is not using it for a heavy workload or may be a younger or older family member. These are devices aimed at a mass-market consumer who wants something that very much 'just works' and aren't bothered by a more controlled environment. At this price range the iPad is infinitely more flexible and has a longer software lifespan than a competing Windows or Chrome device.
The iPad Pro is really nothing more than a satellite device to desktop Mac users who want something light and smart for when they are on the road. Whilst very capable of CAD and some heavy workloads its still more of a bells-and-whistles upsell device. It serves well as an additional machine but is quite poor value as a solo computing device. In many ways it just serves to exploit customers who will always pay for what is marketed as the top-end device.
The MacOS wishlisters are not people happy to give up complication for convenience but customers exploited into buying a Pro for their only computer who wished they had just brought a Macbook Air. There is also a subset of people who wish Apple still sold a $600 Mac but those days are gone.