[AnIdiotOnTheNet]

In the 90s and early 00s it was a sign of professionalism that applications used native OS widgets and respected the theming choices of the user. Sadly, that all went away (about the time the iPhone was released?) and we entered a UX dark age where users only ever get at most 2 choices about theming and UI is considered part of your brand.

People used to say one of the reasons Linux Desktop was shit was that it had so many different look-n-feel's for its disparate applications. Now it is one of the most consistent. People used to say one of the reasons Java was shit because it didn't use native widgets[0] and looked out of place, but now that's the default even for native software. Now we live in an age where developers loudly proclaim their love for bundling an entire web browser as their UI, nothing even remotely resembles the native look-n-feel, and they consider adding a bespoke 'Dark Mode' theme some kind of actually noteworthy achievement.

If personal computing survives the next few decades, future historians will judge us very poorly.

[0] It could, but people used Swing in practice.