Honestly, anyone that has not used Delphi lately you do not know how good it is compared to all the junk out there. I have developed windows applications, cross-platform, and mobile apps with native speed. You pair it with a few components from TMS and the Skia3Delphi and you can make some very solid applications. I have deployed on windows, iOS, Android, and MacOS.... and it is consistent, try doing that in Flutter, Xamarin, or React Native. You could do two applications for mobile in Swift and Kotlin... depending on what it is, I have, but for the most part you really don't need to.