Ok, I'm going to try my hand at clearing some of this up, so bear with me.
If you look at R7 in the rules, it states the following:
The auth team has become aware of several users that are uncomfortable with the events that occur in the chat; a lewd comment is made and the chat stays in that vein for a long period of time, or a comment is purposefully made to be lewd and conversation carries onward. The rule does very clearly state that these are okay in passing, in that you can make the comment and then move on. Moderators are just going to try to make sure that this type of thing does not become the prevailing topic.
A lot of this hinges on respecting others as well; if people are saying that they are uncomfortable with the topic, then you should respect that maybe a public place is not the ideal location for the conversation. Additionally, if the conversation dies when taken to a back channel, then maybe it wasn't worth having in the first place? I know that this isn't always the case in terms of conversation because the Lobby is the main hub, but the auth team has stated multiple times that the Abyss is really a better place for things that tend to infringe on R7 as a courtesy to other users.
In all honesty, it isn't so much becoming stricter on rule 7 as it is holding the rule to its full integrity, something that the auth team has to take fault on because we have not upheld the rule to its full extent at times, allowing things to maybe go a bit too far before trying to quell things. At the same time, there are more things that can be humorous and talked about that don't infringe on this rule. I would also like to point out that no one in particular is being called out or targeted here. This post goes out to the entirety of the community, not just a couple of people.