cause its technically small kids in anthro form so, also its very gross to sexualize small "furry" kids, and also VERY illegal

It is allowed, no it is not illegal. Perhaps where you live it might be illegal, but we operate under the local/state laws of Phoenix, Arizona, and laws of the United States of America.
If you don't want to see it, use your blacklist.

It's fiction, therefore it harms no one. It's not illegal in any "technical" sense.
Have your preferences, but don't confuse them with the law.
Don't start forum threads just to complain about the rules.