What's wrong with building my own wheel on my day off?! (defensive)

I built a rear wheel using a Stans Grail CB7 rim.
It's rated at 300g, and this particular one came in at 289–290g,
which is about 100g lighter than the DT XR331 rim I'm currently using.

Campy hub 24H, semi-comp 4x lacing with tie-ins.

↑Actual measured weight without rim tape installed.

I built a rear wheel using a Stans Grail CB7 rim.
It's rated at 300g, and this particular one came in at 289–290g,
which is about 100g lighter than the DT XR331 rim I'm currently using.

Campy hub 24H, semi-comp 4x lacing with tie-ins.

↑Actual measured weight without rim tape installed.