nolongersingle: That’s a very subjective question. To be short, there is a camp called “Torah-observant Jews”. Said camp contains many Hashkafos. It is very difficult and painful when some inside the camp are viewed as outside. Especially, as is the case with most of the Taanos on “Modern Orthodoxy”, a lot of it just comes from misinformation. Most within the “Yeshivish” and “Chareidi” camps accept DL and MO as being Torah-observant, just not for them. So when some come very strongly against it, it hurts.
How this is different than Meshichism is a very nuanced problem.