C# takes 0.55s on M1 Pro with relatively ancient and not most optimized System.Xml.XmlReader:

    ./xmlgen -f 2 > dotnet/out.xml
    cd dotnet && dotnet publish -o .
    time ./XMLParse out.xml

https://gist.github.com/neon-sunset/6ba67f23e58afdb80f6be868...