Yes. The computer should never do something that I haven't explicitly told it to do. You can design the same exact feature but I need to trigger it, the machine should not be making decisions for me.
And you think that is the right call for the majority of people?
Also, in addition to auto correcting words, your phone also auto corrects individual key presses based on the word you are typing. The same physical impact on your screen will register a different letter based on the letters that come before it.
So part of your “typing on glass accuracy” is dependent on a designer designing that feature that “does work ahead of time”.
No. Certainly not on a desktop, where I type much faster than any suggestion can appear (esp. infuriating on IDEs); usually not on a phone either, where "corrections", while sometimes faster than me, are always wrong.