If you ever had experience with Visual Studio, you would know that older projects are still readable by newer versions of Visual Studio. Except too old versions like 2008 get a conversion dialog, but even then the project is then still usable. So your point is wrong.
In fact, I just tested this now with Visual C# Express 2010 and Visual Studio 2019 Preview. 2019 was able to read the project just fine without any messages regarding it’s creation.
Yeah agree, looks like a very basic Forms window. (which it is)