100%

I just commented the same.

It's pretty clear that the "possibly" refers to the presence of the CNAME RRs, not the ordering.

The context makes it less clear, but even if we pretend that part is crystal, a comment that stops there is missing the point of the article. All CNAMEs at the start isn't enough. The order of the CNAMEs can cause problems despite perfect RFC compliance.

To me, this reads exactly the opposite.