As someone who makes an actual (meager) living off helping fuel SL’s continued sexual content, that’s one thing that every virtual world ever since has flopped on. They wanna be family and advertiser friendly. People don’t want to be though. Sex sells, better than anything else does.
Googling for “titan sub construction” and you can see pictures of it under construction, where the interior is clearly significantly smaller than the exterior, and there’s visible open space past an inner shell.