Shtreimel deals with an interesting question in his latest post. Since we think that frum people are wrong in what they believe, should we actively try to be 'merachek' them? This was my comment to him.
My take on the original question, and on the post is that ultimately it's the thought that counts. Not of the proselytizer, but of the person being proselytized. I don't think it's important to actively try to make people stop being frum, even though I don't there is any inherent value to being frum. What is important is making people think about what they believe in and why they believe in it. Most of the people who have the negative traits associated with being frum, are the people who never really thought about why they're frum or what it means to them to be frum. They will always just follow the pack, usually with negative results. But in my experience, the frum people who really thought about it, and struggled with it and decided that it had meaning and value to them, are the people who I consider to be 'good frum Jews'. Because ultimately, to quote someone smarter than me, "the unexamined life is not worth living." So while I don't think it's important for us OTD'ers to try to actively make people not frum, I think it's important for us to try to make people question their beliefs and question the status quo, regardless of whether this makes them go OTD or not. In the end I'm fine with being a חוטא ומחטיא. It actually sounds kind of cool.