nolongersingle: It’s hard to comment on OO because they don’t have an official mission statement and their flagship Yeshivah (YCT) officially does not endorse anything that’s Kefirah. However, a scarily high percentage of the people who attend the Yeshivah say and do things contrary to Ikkarei Emunah. So I think most of the Frum world is on a “wait and see” policy by them.
The same goes for Yeshivat Maharat, though I think it’s pretty clear by now that almost everyone attending there now has improper Hashkafos. (e.g. if we took a poll of Maharat and asked if/why a woman can wear Tefilin, the answers would pretty clearly show something outside the framework of traditional Mesorah-based Judaism.)