Messianic Judaism is Biblical Judaism with Yeshua as the Messiah.
The Bible is taught while taking some teachings from the Torah. You claimed they would refer only to the Torah. I showed you that they teach from the Bible also.
From the link that you provided.
More recently I have been bothered that some Christians are deciding to call themselves Messianics even though their belief system remains unchanged from that of Christianity.
As is probably the case with the Hensons. She is described as a pastor's wife. Pastor being a common term denoting Christian deity.
It's the other way around. The Torah is the foundation of the faith, where the B'rit Chadasha (New Testiment) is sometimes referenced.
Click below for more info.
In any event, it's NOT Christian fundamentalism by ANY stretch of the imagination.