How
Maybe I'm missing something but that's literally what everyone in the movie is telling Will. HIs best friend, his mentor, his girlfriend, his therapist. They all literally say this in some form during the movie. His character growth is believing it himself.
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You are right that WinForms and MVC have been around forever. However, Microsoft has continuously told devs that they are the past. So, you would be forgiven for expecting them to go away.
WinUI is the current official desktop paradigm and it is basically UWP from an API point of view. So the idea that UWP went away is not 100% accurate either.
Microsoft does not really abandon their UI tech like people say they do. But look how many different frameworks they have.
All of the above is Windows desktop only. There are a completely different set of UI technologies for the web.
UNO Platform (Open Source) allows you to use the WinUI API to target almost anything.
.NET MAUI is the official "cross platform" UI tech from Microsoft. It is what you use to target iOS and Android. As a bonus, you can target macOS and Windows too. On Windows, it uses WinUI. You will notice that the Linux desktop is missing from that list.
Here comes Avalonia to build MAUI on top of the Avalonia framework. This adds Linux and WASM to the list of platforms that MAUI will run on. Adding Linux is awesome. A lot of people have wanted that and it really completes the MAUI cross-platform story.
Adding WASM is neat but MAUI was never meant to target the web. If you use it for that, it is literally just the modern version of Silverlight. But Microsoft did not design it for that at all. It is just a back-end that Avalonia supports.
Nothing yet? Damn...
There are probably less code samples and let’s be honest this is 2025, how well do LLMs generate code for obscure languages where the training data is more sparse?
A: why in gods name B: Every language, every framework and every tech stack is 1 month to 5 years away from being legacy crap. Unless you're learning something like KOBOL it's better to be able to use a variety of languages and show that you can adapt.
It really needs to be, though, that's kind of the crux of it.
Federate or die off, it's time to get rid of old tribal thinking. We're all Europeans.