Okay, at the risk of sounding like an old man here, I'm just gonna throw out my two cents here. Please don't kill me.
I actually think that some content and guideline rules are important both so that people don't go hog wild and do whatever they want, standards and morality be darned. Plus, a lot of people probably don't want their children begin exposed to excess amounts of sax and violins if you can catch my (Tokyo) Drift. Heck, sometimes limitations, no matter who stupid they may seem, can help someone think creatively and possibly come up with an even better solution to the problem presented and produce a better product as well.
On the flip side however, I do think that you can go overboard with the rules and censorship and completely stifle any and all forms of creativity, spice, and conflict in general and pump out some incredibly bland content as a result. (A lot of religious media suffers greatly from this problem of trying to be as inoffensive and non-controversial as possible.) Although, I will admit that Apple might be a bit overbearing in this regard. I remember there was a huge kerfuffle over a while back over their streaming service they announced that said it would be "family-friendly" only for people to realize that meant it would completely sanitize literally everything and anything that could cause even the slightest bit of stir. (An example I read was that someone got their TV series turned down from Apple for the great offense of having a Christian cross decoration in their house, The Horror!)
SO that's just my thoughts on it. In conclusion: Rules are great and necessary for creative works, but too many rules could cause a lot of damage and stifle creative if handled improperly. Like I said, please don't kill me.
(P.S. @michaelson I still think a rating/filter system would be a boon to the site in general, because I've seen some thumbnails and titles that were a bit.. spicy for Prime Time if you can catch my drift...)