This can be the mindset now with a lot of things.
If you want a certain app with a feature and the app isn't open source, then you may as well just clone the app and add the feature.
Claude Code and Codex (and other tools) have computer use and are perfectly capable of navigating, experimenting, cloning functionality, writing tests...
If the app is open source it's probably easier to just fork and add your features though. And cheaper.
Hell, I use the (closed-source) app Smart Audiobook Player and I wanted Audiobookshelf integration. I asked Claude, it decompiled the app, added the extra code, recompiled the APK and it works perfectly, syncing my book's progress with the server.
Truly magical, it would have taken me months.