Let’s talk straight – MO used to mean being more involved in the outside world, etc. The fact is that Haredim are very involved in the outside world, especially in USA they hold jobs in all sorts of things.
MO today, unfortunately, means justifying not being stringent in halachic observances. While in all groups not everyone is a tzaddik, myself included, the difference is that if I am lax in a certain mitzvah I know that I am wrong.
MO today means you can go to mixed beaches, kiss the mother of the Bar Mitzvah boy even though she is a married woman, Shacharis at 9 AM on Shabbos regardless of zman Krias Shma, etc. Again, there are many Haredim who are guilty of the same infractions and more but they know they should be doing better. Any MOs out there with an internet filter? After all you have to be “normal” and bring pornography into your house at a button’s press. MO justifies this behavior – sad but I don’t think there is anyone out there who can deny it.
I was brought up MO and believed in what they stood for, went to YU, etc. What did I do? Throw in the towel and raise my kids Haredi – there is no choice for one who is serious about his Yiddishkeit and wants to lead a life of kedusha, times have changed and the era of the Rav, etc. are gone.