Clarification of Rule 5 - This sub is by and for trans people, partners, carers, etc.

I'm trying to limit this sub to trans people only, plus partners and carers with a legitimate interest in surgery. Rule 5 currently states

5. This sub is by and for trans people, plus partners, carers, etc, with a legitimate interest in surgery. If you're not, do not post or comment unless it's of clear benefit to the community here. Others can post on r/asktransgender/. People that only or primarily post compliments on this and other trans subs are likely to be banned.

There's some people who treat this as some kind of porn sub, and certain types of posts attract them in quantity. When I look at their post history its full of posts complimenting women on how they look, and all over trans and/or porn subs, and nothing much else. I ban these.

Obviously I'm not against trans people complimenting one another, but there's a gray area where I have to go far back to see that someone might be a partner (or very rarely are trans themselves), and I'm left wondering should I ban them or not? Are they chasers? What are they even doing in a surgery sub?

This is a total waste of my time, and I personally prefer the sub have a more serious tone. There's plenty of other subs where people can post these kinds of things.

I'm looking at tightening up rule 5 and being a lot stricter on what people post if they are not trans, or how much time I'm going to spend working out if someone should be posting here. I prefer to ban people and if I make a mistake let them back in later.

I've also been thinking of adding a plain flair to people I notice are not trans (and not banned). Currently I've done this under rule 6 for people with a commercial interest in posting here. Flairs in this sub can only be set by moderators.

Does anyone have any opinions on this, or any suggestions about how I should phrase the rule?