You are taking that too literally, sorry for being unclear.
The picture was to show the new parts are working well, they are square, and everything checks out. My words were meant to be funny. Being the creator of this beast you would hope I have the hang of it.
You have to be careful with how you word things in the CNC world accuracy has everything to do with it. You can always add another decimal place to prove parts aren’t perfect. So I will say this, this machine has easily been more accurate than I have ever needed, and always within useful tolerances.