I think that we can "minister" to people one by one as we encounter them here on CM or in the real world.
I think one thing that might get people's attention is if they are not free to marry, or do not accept the church's teachings on sexual morality, if they communicate and want to start a relationship with someone is free/does accept, and that person has to then point out these serious differences, and why they do not feel they can communciate further or take the contact to actually meeting or dating, that would be a message to that person--these things matter, they are important to other Catholics, and implicitly, saying you would be well served to look harder at these issues.
But I am disturbed at the suggestion that the OP here was wrong to post what she thinks. She is entitled to her opinion and if others don't like to read it, then don't read it.
Maybe there is a place in the cyberworld for a "free to marry" and "faithful to all the teaching of the magisterium" catholic dating website, and a sworn to adherence is part of the "price" of admission. But that is not CM, and seems it never will be.
CM, in addition to being the fine ministry it is, is also a product in a marketplace. It is not really for us to tell CM how to run their business. This is what is available, along with a few others Catholic dating sites.
My advice is make it work for you, by communicating with those who seem to share your views (be it as to who is free to date, all the teachings of the church, the latin mass, or whatever). And then with charity "ignore" the rest (telling them politely you are looking for something different, explaining or not explaining, and letting them figure it out).