AIG suggested that "kinds" were roughly equivalent to families and suggested that kinds can interbreed and produce more of their own kind. However, subfamilies and genus of animal never interbreed (or produce more of their own kind).
There is nothing arbitrary about this, they simply contradicted themselves.
And as I said before, if it is so arbitrary that families or subfamilies could be mistaken for species or subspecies, then AIG shouldnt even bother suggesting that kinds are roughly equivalent to taxonomic families.'
To give a real life example of what AIG has claimed. They stated that kinds were roughly equivalent to families. One example of a family of animal might be Felidae.
Felidae - Wikipedia
If Felidae were roughly equivalent to a kind, we might expect, according to AIG, that all cats within felidae can interbreed and produce offspring.
However, no genus of the 50+ genus within felidae can produce fertile offspring with one another.
AIGs suggestion is just completely wrong. And this isn't an arbitrary matter because the reality is, we could pick any other family of animal and we would find the same reality that their respective subfamilies and genus, do not interbreed.
AIG is flat out contradicting themselves in their own words, to the extent that their suggestions aren't even "generally" correct. Rather they're completely wrong.
@Deborah D I am sorry that you're unable to comprehend this simple and straight forward contradiction, but it is what it is. I will be moving on now.