A ‘simplicity’ that historically only manifested in the 14th century. (Amoung other things, since you’re concerned about the old testament judaism, protestants arbitrarily do away with God’s prescriptions on the priesthood.)
I don't know if you were ever a Protestant, but it seems to me that you were not, because you don't know how a Protestant thinks. And unfortunately that makes you more judgmental than you should be. In general Protestants (except for the liberals, about whom I will not attempt to speak) are truth-seekers. They simply see things through a very different paradigm than do Catholics and Orthodox. The "simplicity" of the gospel, for a Protestant, is revealed in *Scripture*. For Protestants, the 16th century recovery was of that presented by the Apostles in the first century, in the NT Scriptures.
-A8