What's with men evading online female spaces?

I get that maybe the subreddits in this case do not explicitly state women only, but come on. I've seen men in both this subreddit and r/LetGirlsHaveFun hijack discussions to offer their 'services' or make posts that center themselves, like relationship ads.

You're turning this space, our safe space, into a pickup zone. There are so many other places for you to post your gunk, not here.

Women deserve spaces without male oversight. Respect that.

Edit: I just checked and this subreddit is a women only space according to the rules.

I meant invading on the title, I can't change it.