Anisavta, you're missing the point. In Christianity -of which the Messianics are a part-, Gentiles are not required to adopt Jewish observance nor is it necessarily proper to do so...Paul wrote on this rather extensively. Jew and Gentile are supposed to be one in Jesus, right? That means that they share a spiritual connection with God, not that Gentiles are now Jews or should for some reason adopt Jewish observance...while the law is not abolished it is not a burden any longer, nor incumbent upon Gentiles. Paul speaks out against those who would encourage Gentiles to do such things...and within the Messianic community, this kind of encouragement is commonplace.
By putting emphasis on observance I think many are taking away the foundation of Christianity which is Jesus...if a Gentile wants to worship as the first century Christians did, they should be made to realize that not all first century Christians worshipped like Jews, because not all were Jews, and those Gentiles who were being persuaded to adopt Jewish practice were rightly discouraged by Paul from doing this. Let me say it again, the foundation of Christianity is NOT the Torah, it is NOT observance, it is Jesus...Torah observance is for Jews
There's nothing wrong or dirty about the word "Christian"...I think you're having a mental block here about this. Christian is simply one who follows and believes Jesus is the messiah...what's wrong with that, really? Messianics don't like the stigma of being called a Christian because of some of the crimes committed in the name of Christ and within the realm of Christianity...fine. Then work to change that stigma...labels are not nearly as important as belief and action. The vast majority of Messianics are in firm agreement with the rest of Christians on the core issues -YHWH is God, Jesus is God, God's son, and the messiah, the Holy Spirit indwells all believers, and the salvation of the messiah is needed to erase sin and have eternal fellowship with God after death- to the outside observer, they are Christian in belief and practice -of which the principle practice of Christianity is evangelism-
You also seem to have angst about the term "Messianic"...why? So Torah True Jews aren't fans...it should be no big deal to you right? Why should it be? You have Jesus, right?
I don't want to speak for Jews...but seems to me that Jews aren't even a fraction as concerned about what kind of observance one follows after becoming a Christian...but rather that they've adopted Christian belief in the first place...but I get the feeling there is a lot of frustration because so many Gentiles within the Messianic movement claim to be Jews when they are not, and then go on to speak as a Jew for the Jewish people in Messianic/Christian circles...whether or not they are sincere is a case-by-case thing...people tried to convince me that I was Jewish because my grandparents were...if I hadn't done my research, I would have believed this...but many do and they're misled.
You still see everything as Jew and Gentile which for a Christian is inappropriate...
My feeling is that if a Gentile feels extreme compulsion to become truly Torah observant, they should convert....of course, I know that the Jewish posters here would disagree

If they can't stomach the idea of leaving Jesus then they should embrace him and be happy as a Gentile...