Yes, modern Windows design is a bit of a mess, caused by both the designer bug of redesigning everything (we have had at least 3 different Windows design languages prevalent over the last 10 years) and Windows having to support extremely old legacy software. The second was almost nonexistent when Windows 95 was designed, they could have a true clean slate, so the comparison isn't as fair. But still, even with the abundance of native UI frameworks, the point holds true that no new software uses any of them, no matter if it's Win32 or WinUI. They could implement them very easily, and some hobbyist software does so, and it looks very native and in-line with the rest of Windows 11, but they choose not to.

And yes, the 3.11 ODBC file selector is still in Windows 11. Praise be to legacy components.