As far as I know, there was never any registrar who insisted on approving your site's content before they would give you a DNS entry. Even if there was, there were many other places you could register that didn't.

If memory holds, it wasn't until relatively late that they allowed you to use swear words in .com domain names.

Good point, but you could have as many swear words as you want in your page content.

What's relatively late? The 2600 vs Ford fuckgeneralmotors.com lawsuit dates back to 2001, more or less predating "serious" web apps (I don't have a better date for the end of the swearing ban, but it's been at least ten years).

Even then, there are lots of other TLDs besides ".com".

PPS: IP