To add on, what the haters here need to realise is that this isn't a binary situation. No one is holding a gun to my head and forcing me to give up my Mac in exchange for using the iPad, nor is the iPad necessarily a crippled device just because it cannot yet replace my Mac 100%. Each has its place in my life, and I am happily using all my Apple products.
Case in point - I own an iPhone, iPad Pro, MacBook Air and iMac. At home, I use my iMac to help prepare my work-related documents for use on my iPad. At work, I use my iPad to teach in the classroom and my MacBook Air for work that requires a conventional PC. I do have a work-issued windows touchscreen computer, but I use that mainly for accessing my network drives and printing documents. I don't use my iPad to create google forms, just as I don't walk around my class with MacBook Air in hand trying to annotate on pdf documents.
Every now and then, I uncover a new workflow which lets me do something on my iOS devices that I couldn't do before (such as automating a previously cumbersome task via workflow), but otherwise, I don't force myself to use my iPad for tasks I know it isn't suitable for. Having used the iPad for such a purpose since 2012, I will say that iPad productivity has come a very long way. And it says a lot that we have moved on from general statements (eg: the iPad can't multitask) to extremely specific and niche use cases (the iPad can't run linux) which really impact like what - 1% of users?
Likewise, the majority of the tasks people here are saying the iPad cannot do, I have absolutely no idea what they are. So I can't access Terminal, or develop iOS apps? I suppose that might be a cause for concern, if I needed to perform those tasks in the first place. I think the posters here also need to realise that their needs aren't really representative of the general consumer at large, and stop acting like their needs are the be-all and end-all of what makes a pro computer.
Wake up, people. The iPad may not be something you personally can use instead of a laptop, but let’s not confuse that with the fact that the iPad is a powerful computer that maybe, just maybe, can exist as an alternative to what’s out there instead of a straight replacement.