>tiny fraction of screen is dedicated to code
Stop right there. If you are writing code with lines longer than 100 characters (and I am being generous there), which is a tiny fraction of screen if your eyesight doesn't suck, you are doing something wrong. I used to use Visual Studio, the IDE depicted in the gif, in my old job, and I had more than enough space to put two code windows vertically side by side. It's not the IDE's fault that the guy in the gif has a low screen resolution, is using a tiny window or is using an absurd font size.
>rest is occupied by BLOAT BLOAT BLOAT
Most of those windows have a use. Fuck, there are a lot of Vim plugins that attempt to recreate them, and unless you are one of those hardcore vanilla Vim purists, I am sure you have installed them as well. You may have a case with all the buttons, though.
>takes hundreds of years to load
This one is true, sadly, but in practice, you rarely have to reboot them.
>can't edit simple files without making a BLOATED project first
This is straight up false, and I can't believe nobody has called you on your bullshit yet. Guess /tech/ has never touched an IDE, yet they love to shittalk them because using Vim because virtue signaling or something.