No, that's not true:
a) Incest was a holy command (what else does it mean "be fruitful and multiply" other than "commit incest"?), before, but, today, as we all know, it's a work of the devil
b) Christ calls "taking of vows" "of the evil one", forbidding it, since it is vaunting oneself against God, as if one is anything in himself to make a vow--it is an offense to God's glory (Mt 5)
c) Christ denounces "any cause divorce" permitted in Torah as "adultery" today (Mt 19)
God gave many concessions under Torah--even the Temple was a concession--like "you can beat your slave to death as long as he doesn't die the same day"
a) Incest was a holy command (what else does it mean "be fruitful and multiply" other than "commit incest"?), before, but, today, as we all know, it's a work of the devil
b) Christ calls "taking of vows" "of the evil one", forbidding it, since it is vaunting oneself against God, as if one is anything in himself to make a vow--it is an offense to God's glory (Mt 5)
c) Christ denounces "any cause divorce" permitted in Torah as "adultery" today (Mt 19)
God gave many concessions under Torah--even the Temple was a concession--like "you can beat your slave to death as long as he doesn't die the same day"
Not all vows are evil, if they were then all marriage is based on the Devils work. Yet a marriage is intended to be a blood covenant. I know today that seems a bit out dated, and that not many are virgins when they marry, that doesn't change what the Bible teaches.
I will consed that we are not to take a vow and invoke any part of creation. That is made clear. However, not making a vow at all, that we can debate to the ends of the earth, and still come out with no consensuses.
You seem to think that any divorce brings adultery. However you fail to say that under the words of Yeshua fornication is grounds for divorce. Keep in mind that the Torah did give a lot of reasons for divorce, it also makes it clear that if you do this, you are not to remarry.
However with a bit more study on this topic, we find that marriage is a life time commitment, even the Torah backs this. What Yeshua did in Mat.5:31-32 was clear up the matter. Adultery has always been grounds for divorce, and remarriage has always been wrong. Unless the grounds for divorce is listed in Torah as not being so. If you will take some time to study this, you will see that most cases given, are not said to be spiritual grounds for divorce. If a women was put out over then non-spiritual grounds, her remarrying was not a sin. Why? She had done nothing wrong, other make her husband mad for what ever reason.
We must always take care placeing one passage in conflict with another. Yeshua could no more remove, or change Torah. Doing so would mean He has sinned. Deut. 4:2, as we know Yeshua had to be sin free or His sacrifice would mean nothing, and what we hang our salvation on would mean nothing.