I can't answer that specifically, as I don't do the moderation, and don't know the details of your post. But I can tell you the rule of thumb is that if a website has actively used YT to improve their standing in the search engines, further links to that site, even by well-intentioned people will be eliminated.
It is big business to try and leverage other sites on the net to improve one's standing. We don't engage in that activity and we take great care to ensure other sites aren't able to do that here. For those harmlessly posting a link, they aren't going to realize what is going on in the background. Many popular tractor sites got their start through spamming YT. It's a sad but factual situation. When you see a link to a tractor site that stays, you can guess that there has been no funny business from that site due to spam marketing companies that some sites hire.