Closed Xenforo with HTML Errors

[DRaver]

I checked the site http://xenforo.com/community/ with the w3c Markup Validation Service an the result is:
19 Errors an 4 warnings.

check this out

Why not zero errors? I this a bug?

 

[Mike]

We do not aim for validation unless it resolves issues.

 

[DRaver]

aha