While VB.NET 1.0 had indeed lots of compatibility issues with VB 6, most of them were fixed in later versions, so I wonder why not at least VB on .NET Framework (Core brings quite a few compatibility issues)

I do know VB since VB 3.0 days, did quite a couple of VB 6 to VB.NET, and VB.NET to C# portings, so it isn't like I don't know the subject.