This is what gets me with the whole iPad vs MacBook discussion;
The iPad, especially now, is viable in many fields and use cases. Home Automation, creating art, organizing your day/life, communication, healthcare, selling, brainstorming, gaming, and so on. I personally also use my iPad as a tool to make my living and it's not underpowered by the OS. Part of that is due to the form factor over a laptop and with the right case, the iPad's screen can be propped up much like a laptop's screen is.
iPadOS has a decent enough file system that's easy enough to reach your documents plus modern iPads let you use external drives now, it's easy enough to hook up a keyboard with bluetooth, but even with that (and more) apparently the iPad simply isn't good enough for many people.
You can quite literally control the lights, thermostat, and music around your house, call your friend from out of state, emulate your favorite retro games, then work on pictures you've taken for your blog or for your eBay store with an iPad yet because the OS works in a different way from macOS, it's an underpowered OS.
I'm not even saying for laptop fans to get an iPad if they don't think it'll work for them either, both have their place. It's just that both can do largely similar things. What makes me want an iPad over a MacBook is that I prefer the form factor + the pencil functionality. Otherwise, it functions much like my other computers that have their own roles in my life.