> I disagree. I’ve been using IntelliJ for a few years now, and the new, simplified interface has made my experience a lot better.

I work on a bunch of enterprise projects and therefore am sticking with the old design, because having more features available at a glance while also fitting as much of the code on screen as possible is definitely nice to have, in addition to my already established habits and knowledge of the UI.

But the new UI? It's also really sleek and pleasant, and a joy to use in the cases where I've toggled over to it. Plus, the fact that they worked on adding a compact mode to the new UI is also great to see! Definitely a good experience in my eyes.

I think the trick is in giving the user the choice on what to use, if there's no horrible incompatibility between the various iterations of something. For example, the day when the old Reddit UI (old.reddit.com) stops working is also the day when a bunch of people will stop hanging around the place. The problem is that companies often find the additional support needed to be a hassle and just optimize for the majority of users, not all of them - much the same how many games out there don't even have a Linux or Mac release, even in cases where the popular game engines make having one pretty easy!

The parent comment above yours is perhaps a bit more mean than it should be, though.

I literally have the opposite experience as a dev. The new interface is horrible, and it's not just the layout. They subtly somehow changed the borders and their color. I now officially can't delineate and know which part of the UI is for what.

I had to fiddle with color schemes, add-ons for updated icon colors, etc. It's a mess.

And even if it's about reducing cognitive overload. The old interface had plenty of "features" and "configuration" to reduce the cognitive load as much as you wanted with both presentation mode and the ability to change the UI however you wanted.

My cynical take is that we just had two giant camps promoting this. One was the designers that wanted to have something to do. And the other camp was the VSCode pushers that just couldn't stand that a glorified (and order of magnitude inferior) text-editor is maintaining user-counts.