Just opening a new tab on a browser is tedious, and if you deal with a lot of intranet tools, this is the very basics of productivity.
This statement is true if you use any machine other than the one you are used to, so this makes little sense. My Windows shortcuts and Linux shortcuts do not match my MacOS shortcuts. I have to use all three OSes at my job.
It sometimes feel like an unspoken taboo, but windows tablets are a thing. Or Chromebooks if there is a strong need for mobile app support.
There is a persistent top-level button in Safari's toolbar to open a new tab. I don't know how tedious that is.
You could technically do "most jobs" on a cheap Android tablet with Chrome and a Bluetooth keyboard if you wanted. You could be a developer who uses Repl.it on your Xbox for all I know. Rationalizing poor software for less complicated jobs seems like a reductive slope to me though.
Every 6 months or so I try to use my iPad as a MacBook replacement for work for a day. It just, doesn’t work.
Every time I’ve come up against a limitation.
The iOS version of a tool is missing some critical functionality. Moving things between apps is a hassle. Multi-tasking is a hassle. Etc. Etc.
I’ll probably keep occasionally trying, and the iPad Pro is a great tablet. But it’s a hassle even for an “email and documents” worker.
So it’s not good as a work machine…apart from most jobs. Most jobs are email and documents. If you’re on the move a lot then it’s a good device for those jobs. Jobs which require a lot of computing power, large screens, input devices other than a keyboard and touch screen, are definitely the minority.