No Mesorah:
“The only difference is that MO is much more likely to be honest with their religious standing. Which is not intrinsically a bad thing.”
Not exactly. The satan tests everyone, so everyone has their challenges. And MO does claims loyalty to “halakha”. But that is where the commonality essentially ends.
1. Being MO is a “permit” to intentionally violate certain issurim while still considering yourself 100% orthodox.
2. MO’s embrace of Zionism as a core tenet of their faith is, of course, hugely problematic because Zionism, of any flavor, is literal idolatry according to Rav Elchonon Wasserman HY”D and the rest.
3. MO’s embrace of secular culture and their disregard for hashkafas haTorah is almost as large a problem as their Zionism because it results in a total distortion of what Jewish (Torah) life should be.