All the things that can be turned off/tuned. Strange that you don't spend the time learning the tool you admonish others for using
And no, of course I'm not going to spend time learning an IDE that someone else recommended to me. I spend my tool-learning time on tools that I selected because I expected them a priori to be useful for me.
I don't mind suggestions if they are unobtrusive, but anything that interrupts my typing is an immediate no-no.
It’s been configurable as an option to have those in every editor I’ve used for about 15 years
Autocomplete and all the other bells-and-whistles just get in my way, most of the time. It's literally the first thing I disable for myself when I install a new developer machine. The few times I set up a new machine and don't disable it, I am reminded why I want to disable it very quickly.
In the past when I've tried to use IDEs, I've often given up within minutes because they would keep doing things that disrupt my flow - like popping up an entire menu of autocomplete suggestions in a way that obscures other code I'm trying to read, or autotyping a close bracket that I would have typed anyway by muscle memory, or not making it clear how to move the cursor past something it auto-typed, or interrupting me with warnings that something won't compile when I haven't finished typing it....